{"id":41561,"date":"2021-11-05T08:48:31","date_gmt":"2021-11-05T11:48:31","guid":{"rendered":"https:\/\/www.lawnstarter.com\/blog\/?p=41561"},"modified":"2026-01-01T19:30:03","modified_gmt":"2026-01-01T22:30:03","slug":"best-post-emergent-herbicides","status":"publish","type":"post","link":"https:\/\/www.lawnstarter.com\/blog\/reviews\/best-post-emergent-herbicides\/","title":{"rendered":"8 Best Post-Emergent Herbicides of 2026 [Reviews]"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Spring is in the air, so your yard needs special care to kill pesky lawn weeds. We searched the shelves of Home Depot, Lowe&#8217;s, Amazon, and Walmart to find the best post-emergent herbicides.&nbsp;<\/p>    <p class=\"wp-block-paragraph\">Our list includes chemical and organic weed killers for lawns, patios, and garden beds. We carefully compared each herbicide&#8217;s ingredients, application, and cost to find the best ones. Our weed killer reviews and <a href=\"#25-buyer%E2%80%99s-guide\">buying guide<\/a> make it easy to pick the best post-emergent product for your yard.&nbsp;&nbsp;<\/p>    <h2 class=\"wp-block-heading\" id=\"0-our-top-picks\">Our Top Picks<\/h2>    <figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td>Best Post-Emergent Herbicides<\/td><\/tr><tr><td>1. <a href=\"#1-1-gordon%E2%80%99s-trimec-best-for-cool-season-grass\">Best for cool-season grass: Gordon\u2019s Trimec<\/a><\/td><\/tr><tr><td>2. <a href=\"#4-2-southern-ag-24-d-amine-best-for-warm-season-grass\">Best for warm-season grass: Southern Ag 2,4-D Amine<\/a><\/td><\/tr><tr><td>3. <a href=\"#7-4-earths-ally-weed-and-grass-killer-best-for-garden-beds\">Best for garden beds: Earth&#8217;s Ally Weed and Grass Killer<\/a><\/td><\/tr><tr><td>4. <a href=\"#10-4-rm43-total-vegetation-control-best-for-complete-annihilation-\">Best for complete annihilation: RM43 Total Vegetation Control<\/a><\/td><\/tr><tr><td>5. <a href=\"#13-5-captain-jacks-lawnweed-brew-best-organic-lawn-weed-killer\">Best organic lawn weed killer: Captain Jack&#8217;s Lawnweed Brew<\/a><\/td><\/tr><tr><td>6. <a href=\"#16-6-quali-pro-quinclorac-75-df-best-crabgrass-killer\">Best crabgrass killer: Quali-Pro Quinclorac 75 DF<\/a><\/td><\/tr><tr><td>7. <a href=\"#19-7-sedgehammer-plus-turf-herbicide-best-nutsedge-killer\">Best nutsedge killer: Sedgehammer Plus Turf Herbicide<\/a><\/td><\/tr><tr><td>8. <a href=\"#22-8-scotts-weedex-southern-best-granular-weed-killer\">Best granular weed killer: Scotts WeedEx Southern<\/a><\/td><\/tr><\/tbody><\/table><\/figure>    <h3 class=\"wp-block-heading\" id=\"1-1-gordon%E2%80%99s-trimec-best-for-cool-season-grass\">1. Gordon\u2019s Trimec &#8211; Best for Cool-Season Grass<\/h3>    <div id=\"product-card-block_915c1e800f5fbc287ccc5960f57c6083\" style=\"border-color: #00ffff;\"     class=\"product-card shadow-lg relative z-20 rounded-md  border bg-white px-4 py-8 md:flex md:gap-10 md:items-start mt-16 md:pt-16\">             <!-- Best of category -->         <span             class=\"absolute top-0 left-1\/2 -translate-x-1\/2 -mt-5 px-3 py-2 bg-white whitespace-nowrap text-center rounded-full border\"             style=\"border-color: #00ffff; shadow-lg;\">             Best for Cool-Season Grass        <\/span>                  <!-- Logo -->         <img decoding=\"async\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/04\/Gordons-Trimec.jpg?wsr\" alt=\"Gordon\u2019s Trimec\"             class=\"w-full max-w-[200px] grow mx-auto md:mx-0 my-0\">          <div class=\"shrink\">                     <h3 x-bind=\"disableNextAndPreviousButtons\" class=\"my-0 text-base font-semibold line-clamp-2 lg:line-clamp-3\">                 Gordon\u2019s Trimec<\/h3>                           <p>Concentrated 3-way herbicide blend, kills 230+ broadleaf weeds, covers 32000-64000 sq.ft., tailored for northern and southern lawns.<\/p>          <div             class=\"flex flex-wrap flex-col space-y-4 justify-center items-center mt-auto md:flex-row md:space-y-0 md:gap-8 md:justify-start\">                             <a href=\"https:\/\/www.amazon.com\/GORDONS-Trimec-Lawn-Weed-Killer-Gallon\/dp\/B016TQGM6E?&#038;linkCode=ll1&#038;tag=lawnstarterla-20&#038;linkId=181e0509871f8eb3f4d2e0aa92898a9a&#038;language=en_US&#038;ref_=as_li_ss_tl\"                     target=\"_blank\"                     class=\"no-underline whitespace-nowrap px-4 py-2 text-white bg-theme-green hover:bg-theme-green-dark transition-colors rounded-full text-base inline-block text-center\" rel=\"nofollow\">Buy on Amazon<\/a>                                          <a href=\"http:\/\/goto.walmart.com\/c\/3062287\/565706\/9383?veh=aff&#038;sourceid=imp_000011112222333344&#038;u=https%3A%2F%2Fwww.walmart.com%2Fip%2FGordon-s-Trimec-Lawn-Weed-Killer-1-Gallon%2F644648921&#038;partnerpropertyid=2928294\"                     target=\"_blank\"                     class=\"no-underline whitespace-nowrap py-1 text-themeGreen hover:text-theme-green-dark transition-colors rounded-full text-base inline-block text-center\">Buy on Walmart<\/a>                                  <\/div>     <\/div> <\/div>   <p class=\"wp-block-paragraph\">Gordon&#8217;s Trimec is effective and affordable. It&#8217;s the best lawn-safe killer of enduring broadleaf weeds like dandelion, plantains, and hemlock. Combining the power of three herbicides, Trimec slays over 230 lawn weeds. Although initially formulated for cool-season grass, it&#8217;s safe for some warm-season varieties.&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>How fast does it work? <\/strong>You may see improvement within a day. It continues working for up to four weeks.&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>Where can you use it? <\/strong>It treats residential lawns with the following turf:<\/p>    <ul class=\"wp-block-list\"> <li>Kentucky bluegrass<\/li>    <li>Bermuda<\/li>    <li>Perennial ryegrass<\/li>    <li>Fescues<\/li>    <li>Other cool-season grasses<\/li> <\/ul>    <p class=\"wp-block-paragraph\"><strong>What&#8217;s the application rate?<\/strong> For <strong>cool-season<\/strong> grass, mix 4 fl. oz. of product with 1 gallon of water to cover 1,000 square feet. For<strong> warm-season grass<\/strong>, mix 2 fl. oz. of product with 1 gallon of water to cover 1,000 square feet.<\/p>    <h4 class=\"wp-block-heading\" id=\"2-specifications\">Specifications<\/h4>    <ul class=\"wp-block-list\"> <li><strong>Active ingredients<\/strong>: 2, 4-D, Mecoprop, Dicamba<\/li>    <li><strong>Application<\/strong>: Sprayer<\/li>    <li><strong>Coverage:<\/strong> 32,000 to 64,000 sq. ft.<\/li>    <li><strong>Form:<\/strong> Liquid<\/li>    <li><strong>Herbicide type:<\/strong> Selective, Systemic<\/li>    <li><strong>Size:<\/strong> 1 gal.<\/li>    <li><strong>Targeted weeds<\/strong>: 230+ broadleaf weeds<\/li> <\/ul>    <h4 class=\"wp-block-heading\" id=\"3-pros-and-cons\">Pros and Cons<\/h4>    <figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td><strong>What we liked&nbsp;<\/strong><\/td><td><strong>What we didn\u2019t like<\/strong><\/td><\/tr><tr><td>\u2713 Very effective against 230+ lawn weeds<br>\u2713 Long-lasting formula<br>\u2713 Affordable<br>\u2713 Safe on cool-season grass<\/td><td>\u2717 Dogs and cats are sensitive to it<br>\u2717 It\u2019s toxic to aquatic life<br>\u2717 Not safe on some warm season grass&nbsp;<\/td><\/tr><\/tbody><\/table><\/figure>    <h3 class=\"wp-block-heading\" id=\"4-2-southern-ag-24-d-amine-best-for-warm-season-grass\">2. Southern Ag 2,4-D Amine &#8211; Best for Warm-Season Grass<\/h3>    <div id=\"product-card-block_5259e69eb0f8dcb017f50ac20ce08909\" style=\"border-color: #00ff00;\"     class=\"product-card shadow-lg relative z-20 rounded-md  border bg-white px-4 py-8 md:flex md:gap-10 md:items-start mt-16 md:pt-16\">             <!-- Best of category -->         <span             class=\"absolute top-0 left-1\/2 -translate-x-1\/2 -mt-5 px-3 py-2 bg-white whitespace-nowrap text-center rounded-full border\"             style=\"border-color: #00ff00; shadow-lg;\">             Best for Warm-Season Grass        <\/span>                  <!-- Logo -->         <img decoding=\"async\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/04\/Southern-Ag-24-D-Amine.jpg?wsr\" alt=\"Southern Ag 2,4-D Amine\"             class=\"w-full max-w-[200px] grow mx-auto md:mx-0 my-0\">          <div class=\"shrink\">                     <h3 x-bind=\"disableNextAndPreviousButtons\" class=\"my-0 text-base font-semibold line-clamp-2 lg:line-clamp-3\">                 Southern Ag 2,4-D Amine<\/h3>                           <p>Economical herbicide: 1-4 pints\/acre. Controls broadleaf weeds, woody plants. Versatile: turf, pastures, rangeland, ditch banks, fences.<\/p>          <div             class=\"flex flex-wrap flex-col space-y-4 justify-center items-center mt-auto md:flex-row md:space-y-0 md:gap-8 md:justify-start\">                             <a href=\"https:\/\/www.amazon.com\/Southern-Ag-Killer-Control-Broad-Leaf\/dp\/B0072289CA?&#038;linkCode=ll1&#038;tag=lawnstarterla-20&#038;linkId=abd25e3475e4a00d36eff21b094e17b8&#038;language=en_US&#038;ref_=as_li_ss_tl\"                     target=\"_blank\"                     class=\"no-underline whitespace-nowrap px-4 py-2 text-white bg-theme-green hover:bg-theme-green-dark transition-colors rounded-full text-base inline-block text-center\" rel=\"nofollow\">Buy on Amazon<\/a>                                          <a href=\"http:\/\/goto.walmart.com\/c\/3062287\/565706\/9383?veh=aff&#038;sourceid=imp_000011112222333344&#038;u=https%3A%2F%2Fwww.walmart.com%2Fip%2FSA-2-4-D-Amine-Weed-Killer-Herbicide-1-Quart%2F164666434&#038;partnerpropertyid=2928294\"                     target=\"_blank\"                     class=\"no-underline whitespace-nowrap py-1 text-themeGreen hover:text-theme-green-dark transition-colors rounded-full text-base inline-block text-center\">Buy on Walmart<\/a>                                  <\/div>     <\/div> <\/div>   <p class=\"wp-block-paragraph\">Southern Ag 2,4-D Amine quickly kills bothersome broadleaf weeds, including smartweed and wild garlic. Yet, it has little effect on most grasses. As a Southerner, I appreciate how gentle it is on herbicide-sensitive warm-season turf, such as St. Augustinegrass. Additionally, it&#8217;s non-toxic to bees and other beneficial insects.&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>How fast does it work? <\/strong>We often see improvements within two days. It continues working for up to two weeks.&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>Where can you use it? <\/strong>It treats lawns, pastures, golf courses, parks, small grains, and corn.<\/p>    <p class=\"wp-block-paragraph\"><strong>What&#8217;s the application rate?<\/strong> Mix 2 to 3 tablespoons of product with 3 to 5 gallons of water to cover 1,000 square feet.<\/p>    <h4 class=\"wp-block-heading\" id=\"5-specifications\">Specifications<\/h4>    <ul class=\"wp-block-list\"> <li><strong>Active ingredients<\/strong>: 2,4-D<\/li>    <li><strong>Application<\/strong>: Sprayer (fan type nozzle preferred)<\/li>    <li><strong>Coverage:<\/strong> 20,000 sq. ft.<\/li>    <li><strong>Form:<\/strong> Liquid<\/li>    <li><strong>Herbicide type:<\/strong> Selective,Systemic<\/li>    <li><strong>Size:<\/strong> 32 oz.<\/li>    <li><strong>Targeted weeds<\/strong>: Non-grassy broadleaf weeds and woody plants<\/li> <\/ul>    <h4 class=\"wp-block-heading\" id=\"6-pros-and-cons\">Pros and Cons<\/h4>    <figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td><strong>What we liked&nbsp;<\/strong><\/td><td><strong>What we didn\u2019t like<\/strong><\/td><\/tr><tr><td>\u2713 Affordable<br>\u2713 Safe on southern lawns<br>\u2713 Non-toxic to honeybees<br>\u2713 Very effective against non-grassy broadleaf weeds<\/td><td>\u2717 Dogs and cats are sensitive to it<br>\u2717 Not effective on grassy weeds<\/td><\/tr><\/tbody><\/table><\/figure>    <h3 class=\"wp-block-heading\" id=\"7-4-earths-ally-weed-and-grass-killer-best-for-garden-beds\">3. Earth&#8217;s Ally Weed and Grass Killer &#8211; Best for Garden Beds<\/h3>    <div id=\"product-card-block_3c6acd8d6e331c258130570af9a5daa5\" style=\"border-color: #ffff00;\"     class=\"product-card shadow-lg relative z-20 rounded-md  border bg-white px-4 py-8 md:flex md:gap-10 md:items-start mt-16 md:pt-16\">             <!-- Best of category -->         <span             class=\"absolute top-0 left-1\/2 -translate-x-1\/2 -mt-5 px-3 py-2 bg-white whitespace-nowrap text-center rounded-full border\"             style=\"border-color: #ffff00; shadow-lg;\">             Best for Garden Beds        <\/span>                  <!-- Logo -->         <img decoding=\"async\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/04\/Earths-Ally-Weed-and-Grass-Killer.jpg?wsr\" alt=\"Earth&#039;s Ally Weed and Grass Killer\"             class=\"w-full max-w-[200px] grow mx-auto md:mx-0 my-0\">          <div class=\"shrink\">                     <h3 x-bind=\"disableNextAndPreviousButtons\" class=\"my-0 text-base font-semibold line-clamp-2 lg:line-clamp-3\">                 Earth&#8217;s Ally Weed and Grass Killer<\/h3>                           <p>Earth&#8217;s Ally: Non-selective, pet-safe herbicide with sea salt power, kills weeds like broadleaf, crabgrass, dandelion. Visible results in 3 hours.<\/p>          <div             class=\"flex flex-wrap flex-col space-y-4 justify-center items-center mt-auto md:flex-row md:space-y-0 md:gap-8 md:justify-start\">                             <a href=\"https:\/\/www.amazon.com\/dp\/B08BN84R94?_encoding=UTF8&#038;th=1&#038;linkCode=ll1&#038;tag=lawnstarterla-20&#038;linkId=2821c3f40e180c08b6d016f8cd37011b&#038;language=en_US&#038;ref_=as_li_ss_tl\"                     target=\"_blank\"                     class=\"no-underline whitespace-nowrap px-4 py-2 text-white bg-theme-green hover:bg-theme-green-dark transition-colors rounded-full text-base inline-block text-center\" rel=\"nofollow\">Buy on Amazon<\/a>                                          <a href=\"http:\/\/goto.walmart.com\/c\/3062287\/565706\/9383?veh=aff&#038;sourceid=imp_000011112222333344&#038;u=https%3A%2F%2Fwww.walmart.com%2Fip%2FEarth-s-Ally-Weed-Grass-Killer-1-Gallon-Ready-to-Use%2F344548863&#038;partnerpropertyid=2928294\"                     target=\"_blank\"                     class=\"no-underline whitespace-nowrap py-1 text-themeGreen hover:text-theme-green-dark transition-colors rounded-full text-base inline-block text-center\">Buy on Walmart<\/a>                                          <a href=\"https:\/\/sovrn.co\/rbb2bse\"                     target=\"_blank\"                     class=\"no-underline whitespace-nowrap py-1 text-themeGreen hover:text-theme-green-dark transition-colors rounded-full text-base inline-block text-center\">Buy on Lowe&#8217;s<\/a>                     <\/div>     <\/div> <\/div>   <p class=\"wp-block-paragraph\">Earth&#8217;s Ally Weed and Grass Killer is our favorite product for spot-treating pavement cracks and preparing garden beds. The salt-based solution comes ready-to-use in a trigger spray bottle. Using dehydration, it controls broadleaf and grassy weeds, including crabgrass, dandelion, and clover. It\u2019s eco-friendly and safe for children, pets, and pollinators.&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>How fast does it work? <\/strong>Plants noticeably decline in about 3 hours and die within 10 days.&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>Where can you use it? <\/strong>It treats driveways, patios, and vegetable\/landscape beds. We don&#8217;t advise using it for lawn weed control, even on salt-tolerant varieties.&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>What&#8217;s the application rate?<\/strong> No mixing is required. It comes ready-to-use.&nbsp;<\/p>    <h4 class=\"wp-block-heading\" id=\"8-specifications\">Specifications<\/h4>    <ul class=\"wp-block-list\"> <li><strong>Active ingredient<\/strong>: Sodium Chloride<\/li>    <li><strong>Application<\/strong>: Trigger spray bottle&nbsp;<\/li>    <li><strong>Coverage:<\/strong> 300 sq. ft.<\/li>    <li><strong>Form:<\/strong> Liquid<\/li>    <li><strong>Herbicide type:<\/strong> Organic, Non-selective, Contact<\/li>    <li><strong>Size:<\/strong> 1 gal.<\/li>    <li><strong>Targeted weeds<\/strong>: Broadleaf and grassy weeds&nbsp;<\/li> <\/ul>    <h4 class=\"wp-block-heading\" id=\"9-pros-and-cons\">Pros and Cons<\/h4>    <figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td><strong>What we liked&nbsp;<\/strong><\/td><td><strong>What we didn\u2019t like<\/strong><\/td><\/tr><tr><td>\u2713 Organic<br>\u2713 No mixing<br>\u2713 Safe near edibles&nbsp;<br>\u2713 Non-toxic to honeybees<br>\u2713 Safe for children and pets<br>\u2713 No additional equipment needed<br>\u2713 Effectively kills grassy and broadleaf weeds<\/td><td>\u2717 Expensive<br>\u2717 Doesn\u2019t kill as many plants as RM43<\/td><\/tr><\/tbody><\/table><\/figure>    <h3 class=\"wp-block-heading\" id=\"10-4-rm43-total-vegetation-control-best-for-complete-annihilation-\">4. RM43 Total Vegetation Control &#8211; Best for Complete Annihilation&nbsp;<\/h3>    <div id=\"product-card-block_07dee40739a6775d4a19ca2e4446c6be\" style=\"border-color: #ff0000;\"     class=\"product-card shadow-lg relative z-20 rounded-md  border bg-white px-4 py-8 md:flex md:gap-10 md:items-start mt-16 md:pt-16\">             <!-- Best of category -->         <span             class=\"absolute top-0 left-1\/2 -translate-x-1\/2 -mt-5 px-3 py-2 bg-white whitespace-nowrap text-center rounded-full border\"             style=\"border-color: #ff0000; shadow-lg;\">             Best for Complete Annihilation        <\/span>                  <!-- Logo -->         <img decoding=\"async\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/04\/RM43-Total-Vegetation-Control.jpg?wsr\" alt=\"RM43 Total Vegetation Control\"             class=\"w-full max-w-[200px] grow mx-auto md:mx-0 my-0\">          <div class=\"shrink\">                     <h3 x-bind=\"disableNextAndPreviousButtons\" class=\"my-0 text-base font-semibold line-clamp-2 lg:line-clamp-3\">                 RM43 Total Vegetation Control<\/h3>                           <p>Versatile herbicide: Prevents vegetation for up to 1 year. Spot control for brush, vines, weeds along fences, roadsides.<\/p>          <div             class=\"flex flex-wrap flex-col space-y-4 justify-center items-center mt-auto md:flex-row md:space-y-0 md:gap-8 md:justify-start\">                                               <\/div>     <\/div> <\/div>   <p class=\"wp-block-paragraph\">The most effective non-selective weed killer is RM43 Total Vegetation Control. It kills most vegetation, including turfgrass, brush, and invasive vines. Additionally, it prevents plants from growing for up to one year.&nbsp;<\/p>    <p class=\"wp-block-paragraph\">The concentrated formula contains two potent herbicides and a surfactant. Like Roundup, it quickly eliminates annual grasses, but RM43 beats Roundup&#8217;s ability to kill many broadleaf and woody plants. It&#8217;s great for large areas, such as sites that need clearing to build a deck or patio. Alternatively, it can spot-treat pavement, patios, and gravel.&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>How fast does it work? <\/strong>Vegetation starts to succumb in 2 to 3 days, and most plants die within two weeks.&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>Where can you use it? <\/strong>It treats weeds on sidewalks, driveways, fence rows, vacant lots, and construction sites.&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>What&#8217;s the application rate?<\/strong> To treat 1,000 square feet, mix 7.4 fl. oz. of product with 1 to 10 gallons of water.&nbsp;<\/p>    <h4 class=\"wp-block-heading\" id=\"11-specifications\">Specifications<\/h4>    <ul class=\"wp-block-list\"> <li><strong>Active ingredient<\/strong>: Glyphosate, Imazapyr<\/li>    <li><strong>Application<\/strong>: Sprayer<\/li>    <li><strong>Coverage:<\/strong> 4,324 sq. ft.<\/li>    <li><strong>Form:<\/strong> Liquid<\/li>    <li><strong>Herbicide type:<\/strong> Non-selective, Systemic<\/li>    <li><strong>Size:<\/strong> 32 oz.<\/li>    <li><strong>Targeted weeds<\/strong>: Kills most plants, including grass, weeds, brush, vines and trees<\/li> <\/ul>    <h4 class=\"wp-block-heading\" id=\"12-pros-and-cons\">Pros and Cons<\/h4>    <figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td><strong>What we liked&nbsp;<\/strong><\/td><td><strong>What we didn\u2019t like<\/strong><\/td><\/tr><tr><td>\u2713 Effective against just about all vegetation<br>\u2713 Prevents new plants from growing&nbsp;<br>\u2713 Works quickly<br>\u2713 Long lasting results<br>\u2713 Easy to mix and apply<br>\u2713 Affordable<\/td><td>\u2717 Not good for areas with desirable lawns or landscaping<br>\u2717 Can\u2019t grow anything in the area for one year<br>\u2717 Because it\u2019s long lasting, it\u2019s highly pollutant&nbsp;<br>\u2717 Harms beneficial bacteria in soil<\/td><\/tr><\/tbody><\/table><\/figure>    <h3 class=\"wp-block-heading\" id=\"13-5-captain-jacks-lawnweed-brew-best-organic-lawn-weed-killer\">5. Captain Jack&#8217;s Lawnweed Brew &#8211; Best Organic Lawn Weed Killer<\/h3>    <div id=\"product-card-block_83e47241327dc028d35ceeaa00dd7c6c\" style=\"border-color: #ffffff;\"     class=\"product-card  relative z-20 rounded-md  border bg-white px-4 py-8 md:flex md:gap-10 md:items-start mt-16\">                  <!-- Logo -->         <img decoding=\"async\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/04\/Captain-Jacks-Lawnweed-Brew.jpg?wsr\" alt=\"Captain Jack&#039;s Lawnweed Brew\"             class=\"w-full max-w-[200px] grow mx-auto md:mx-0 my-0\">          <div class=\"shrink\">                     <h3 x-bind=\"disableNextAndPreviousButtons\" class=\"my-0 text-base font-semibold line-clamp-2 lg:line-clamp-3\">                 Captain Jack&#8217;s Lawnweed Brew<\/h3>                           <p>Controls weeds and disease including dandelion, moss, algae, clover. Quick results within hours. Safe for grass. Derived from iron.<\/p>          <div             class=\"flex flex-wrap flex-col space-y-4 justify-center items-center mt-auto md:flex-row md:space-y-0 md:gap-8 md:justify-start\">                             <a href=\"https:\/\/www.amazon.com\/Bonide-Captain-Jacks-LawnWeed-Concentrate\/dp\/B09G93TB3Z?&#038;linkCode=ll1&#038;tag=lawnstarterla-20&#038;linkId=7ea791597c4fcc3f9ef973e7c9a366f3&#038;language=en_US&#038;ref_=as_li_ss_tl\"                     target=\"_blank\"                     class=\"no-underline whitespace-nowrap px-4 py-2 text-white bg-theme-green hover:bg-theme-green-dark transition-colors rounded-full text-base inline-block text-center\" rel=\"nofollow\">Buy on Amazon<\/a>                                          <a href=\"http:\/\/goto.walmart.com\/c\/3062287\/565706\/9383?veh=aff&#038;sourceid=imp_000011112222333344&#038;u=https%3A%2F%2Fwww.walmart.com%2Fip%2FBonide-Captain-Jacks-2616-Lawnweed-Brew-1-Gallon-Ready-to-Use-Spray-Kills-Weeds%2F575290905%3Fwmlspartner%3Dwlpa%26selectedSellerId%3D0%26wl13%3D977%26adid%3D22222222277575290905_117755028669_12420145346%26wmlspartner%3Dwmtlabs%26wl0%3D%26wl1%3Dg%26wl2%3Dc%26wl3%3D501107745824%26wl4%3Dpla-306310554666%26wl5%3D9011319%26wl6%3D%26wl7%3D%26wl8%3D%26wl9%3Dpla%26wl10%3D8175035%26wl11%3Dlocal%26wl12%3D575290905%26wl13%3D977%26veh%3Dsem_LIA%26gclsrc%3Daw.ds%26%26adid%3D22222222237575290905_117755028669_12420145346%26wl0%3D%26wl1%3Dg%26wl2%3Dc%26wl3%3D501107745824%26wl4%3Dpla-306310554666%26wl5%3D9011319%26wl6%3D%26wl7%3D%26wl8%3D%26wl9%3Dpla%26wl10%3D8175035%26wl11%3Dlocal%26wl12%3D575290905%26veh%3Dsem%26gad_source%3D1%26gclid%3DCjwKCAjwh4-wBhB3EiwAeJsppCE3vjhSroFMAEGcIoI_8ooiJC4UT37pAOJXLBi5TbHvFkVsZqBamhoCWTIQAvD_BwE&#038;partnerpropertyid=2928294\"                     target=\"_blank\"                     class=\"no-underline whitespace-nowrap py-1 text-themeGreen hover:text-theme-green-dark transition-colors rounded-full text-base inline-block text-center\">Buy on Walmart<\/a>                                          <a href=\"https:\/\/www.homedepot.com\/p\/Bonide-Captain-Jack-s-Lawnweed-Brew-32-oz-Concentrate-Fast-Acting-Formula-Controls-Weeds-Moss-Algae-Lichens-and-Disease-2611\/314858756\"                     target=\"_blank\"                     class=\"no-underline whitespace-nowrap py-1 text-themeGreen hover:text-theme-green-dark transition-colors rounded-full text-base inline-block text-center\">Buy on Home Depot<\/a>                     <\/div>     <\/div> <\/div>   <p class=\"wp-block-paragraph\">Captain Jack&#8217;s Lawnweed Brew is an organic herbicide that&#8217;s gentle on grass. Its key ingredient, iron HEDTA, controls many broadleaf weeds. <a href=\"https:\/\/u.osu.edu\/athleticfieldmanagement\/2019\/03\/13\/organic-vs-synthetic-herbicides-for-athletic-field-weed-management\/\" target=\"_blank\" rel=\"noreferrer noopener\">Dr. Dave Gardner<\/a>, a professor of turfgrass science at OSU, recommends using iron HEDTA to control dandelion, white clover, ground ivy, and plantains. In addition to killing weeds, Captain Jack targets moss, algae, and diseases.<\/p>    <p class=\"wp-block-paragraph\"><strong>How fast does it work? <\/strong>In just a few hours we noticed weeds deteriorate. You may have to reapply the product 3 to 4 weeks after the initial treatment. A <a href=\"https:\/\/ecommons.cornell.edu\/items\/625e42ab-9510-44c7-8548-edc4e3703bfd\" target=\"_blank\" rel=\"noreferrer noopener\">Cornell University study<\/a> found that henbit, ajuga, white clover, oxalis and motherwort died after one treatment. Other weeds took two to three treatments.&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>Where can you use it? <\/strong>Just about any cool-season or warm-season grass, except bentgrass.&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>What&#8217;s the application rate?<\/strong> Mix 5 ounces of product with 1 gallon of water. It takes 2.5 to 10 gallons of mixed solution to treat 1,000 square feet.&nbsp;<\/p>    <h4 class=\"wp-block-heading\" id=\"14-specifications\">Specifications<\/h4>    <ul class=\"wp-block-list\"> <li><strong>Active ingredient<\/strong>: Iron HEDTA<\/li>    <li><strong>Application<\/strong>: Backpack, compression, or knapsack sprayer<\/li>    <li><strong>Coverage:<\/strong> 2,400 sq. ft.<\/li>    <li><strong>Form:<\/strong> Liquid<\/li>    <li><strong>Herbicide type:<\/strong> Organic, Selective, Contact<\/li>    <li><strong>Size:<\/strong> 32 oz.<\/li>    <li><strong>Targeted weeds<\/strong>: Broadleaf weeds, moss, algae&nbsp;<\/li> <\/ul>    <h4 class=\"wp-block-heading\" id=\"15-pros-and-cons\">Pros and Cons<\/h4>    <figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td><strong>What we liked&nbsp;<\/strong><\/td><td><strong>What we didn\u2019t like<\/strong><\/td><\/tr><tr><td>\u2713 Organic<br>\u2713 Works quickly<br>\u2713 Safe on most grass<br>\u2713 Non-toxic to honeybees<br>\u2713 Safe to reseed after 24 hours<br>\u2713 Effectively kills many lawn weeds<br>\u2713 Controls moss and algae<br>\u2713 Controls lawn diseases including dollar spot, rust, snow mold<\/td><td>\u2717 Expensive<br>\u2717 Many weeds need multiple treatments<br>\u2717 Sometimes it temporally discolors grass<br>\u2717 Not safe on bentgrass<\/td><\/tr><\/tbody><\/table><\/figure>    <h3 class=\"wp-block-heading\" id=\"16-6-quali-pro-quinclorac-75-df-best-crabgrass-killer\">6. Quali-Pro Quinclorac 75 DF &#8211; Best Crabgrass Killer<\/h3>    <div id=\"product-card-block_622cf848a734c63d6853e86e4dfa85dc\" style=\"border-color: #ffffff;\"     class=\"product-card  relative z-20 rounded-md  border bg-white px-4 py-8 md:flex md:gap-10 md:items-start mt-16\">                  <!-- Logo -->         <img decoding=\"async\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/04\/Quali-Pro-Quinclorac-75-DF.jpg?wsr\" alt=\"Quali-Pro Quinclorac 75 DF\"             class=\"w-full max-w-[200px] grow mx-auto md:mx-0 my-0\">          <div class=\"shrink\">                     <h3 x-bind=\"disableNextAndPreviousButtons\" class=\"my-0 text-base font-semibold line-clamp-2 lg:line-clamp-3\">                 Quali-Pro Quinclorac 75 DF<\/h3>                           <p>Ideal for commercial and residential turfgrass, golf courses, sports fields, and sod farms. Effective against various weeds. Contains Quinclorac 75%.<\/p>          <div             class=\"flex flex-wrap flex-col space-y-4 justify-center items-center mt-auto md:flex-row md:space-y-0 md:gap-8 md:justify-start\">                             <a href=\"https:\/\/www.amazon.com\/Quinclorac-Selective-Equivalent-Drive-quali-1014\/dp\/B006LAVM3W?th=1&#038;linkCode=ll1&#038;tag=lawnstarterla-20&#038;linkId=0a9d6d387ba9660f9b3cd84f444a967e&#038;language=en_US&#038;ref_=as_li_ss_tl\"                     target=\"_blank\"                     class=\"no-underline whitespace-nowrap px-4 py-2 text-white bg-theme-green hover:bg-theme-green-dark transition-colors rounded-full text-base inline-block text-center\" rel=\"nofollow\">Buy on Amazon<\/a>                                          <a href=\"http:\/\/goto.walmart.com\/c\/3062287\/565706\/9383?veh=aff&#038;sourceid=imp_000011112222333344&#038;u=https%3A%2F%2Fwww.walmart.com%2Fip%2FQuinclorac-75-DF-Herbicide-1-lb-by-Bottle-by-Prime-Source%2F521473395&#038;partnerpropertyid=2928294\"                     target=\"_blank\"                     class=\"no-underline whitespace-nowrap py-1 text-themeGreen hover:text-theme-green-dark transition-colors rounded-full text-base inline-block text-center\">Buy on Walmart<\/a>                                  <\/div>     <\/div> <\/div>   <p class=\"wp-block-paragraph\">Quali-Pro Quinclorac 75 DF is the best crabgrass killer. It also controls clover, dollarweed, Kikuyu, and many other grassy and broadleaf weeds. Quinclorac is safe on several grass types but isn&#8217;t for everyone\u2014warm-season turf such as Bahiagrass, St. Augustine, and centipede is susceptible to severe damage.&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>How fast does it work? <\/strong>Noticeable changes occur within a few days. It continues working for up to 2 weeks.&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>Where can you use it? <\/strong>It treats residential and commercial lawns, golf courses, sports fields, and sod farms with the following types of turf:<\/p>    <ul class=\"wp-block-list\"> <li>Bermuda&nbsp;<\/li>    <li>Kentucky bluegrass<\/li>    <li>Buffalo<\/li>    <li>Fescue<\/li>    <li>Ryegrass<\/li>    <li>Zoysiagrass<\/li> <\/ul>    <p class=\"wp-block-paragraph\"><strong>What&#8217;s the application rate?<\/strong> Mix 1 tablespoon of product with 1 gallon of water to cover 1 acre. A surfactant is required.<\/p>    <h4 class=\"wp-block-heading\" id=\"17-specifications\">Specifications<\/h4>    <ul class=\"wp-block-list\"> <li><strong>Active ingredients<\/strong>: Quinclorac<\/li>    <li><strong>Application<\/strong>: Sprayer<\/li>    <li><strong>Coverage:<\/strong> 43,560 sq. ft.<\/li>    <li><strong>Form:<\/strong> Water-soluble<\/li>    <li><strong>Herbicide type:<\/strong> Selective, systemic<\/li>    <li><strong>Size:<\/strong> 1 lb.<\/li>    <li><strong>Targeted weeds<\/strong>: Broadleaf and grassy weeds<\/li> <\/ul>    <h4 class=\"wp-block-heading\" id=\"18-pros-and-cons\">Pros and Cons<\/h4>    <figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td><strong>What we liked&nbsp;<\/strong><\/td><td><strong>What we didn\u2019t like<\/strong><\/td><\/tr><tr><td>\u2713 Very effective against crabgrass and other grassy weeds<br>\u2713 Effective on some broadleaf weeds<br>\u2713 Kills mature crabgrass and clover<br>\u2713 Highly concentrated<br>\u2713 Safe on many popular turf grasses<\/td><td>\u2717 Doesn\u2019t work as well as 2,4-D and Trimec on some broadleaf weeds<br>\u2717 Harmful to most warm-season turf<br>\u2717 Toxic to aquatic life<br>\u2717 Cumbersome to mix<\/td><\/tr><\/tbody><\/table><\/figure>    <h3 class=\"wp-block-heading\" id=\"19-7-sedgehammer-plus-turf-herbicide-best-nutsedge-killer\">7. Sedgehammer Plus Turf Herbicide &#8211; Best Nutsedge Killer<\/h3>    <div id=\"product-card-block_15d06c563936d7ba5913359f89641524\" style=\"border-color: #ffffff;\"     class=\"product-card  relative z-20 rounded-md  border bg-white px-4 py-8 md:flex md:gap-10 md:items-start mt-16\">                  <!-- Logo -->         <img decoding=\"async\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/04\/Sedgehammer-Plus-Turf-Herbicide.jpg?wsr\" alt=\"Sedgehammer Plus Turf Herbicide\"             class=\"w-full max-w-[200px] grow mx-auto md:mx-0 my-0\">          <div class=\"shrink\">                     <h3 x-bind=\"disableNextAndPreviousButtons\" class=\"my-0 text-base font-semibold line-clamp-2 lg:line-clamp-3\">                 Sedgehammer Plus Turf Herbicide<\/h3>                           <p>Sedgehammer Herbicide: Contains 13.5g Halosulfuron-methyl (5%). Ideal for established lawns, ornamental turf, and various non-crop sites. Easy application.<\/p>          <div             class=\"flex flex-wrap flex-col space-y-4 justify-center items-center mt-auto md:flex-row md:space-y-0 md:gap-8 md:justify-start\">                             <a href=\"https:\/\/www.amazon.com\/Sedgehammer-Plus-Herbicide-Grams-Packs\/dp\/B007PHNUOE?&#038;linkCode=ll1&#038;tag=lawnstarterla-20&#038;linkId=c51b013509f485b1ac9e17082b4d5abe&#038;language=en_US&#038;ref_=as_li_ss_tl\"                     target=\"_blank\"                     class=\"no-underline whitespace-nowrap px-4 py-2 text-white bg-theme-green hover:bg-theme-green-dark transition-colors rounded-full text-base inline-block text-center\" rel=\"nofollow\">Buy on Amazon<\/a>                                               <\/div>     <\/div> <\/div>   <p class=\"wp-block-paragraph\">The best nutsedge slayer is Sedgehammer Plus Turf Herbicide. It controls purple and yellow nutsedge, kyllinga, and horsetail but won&#8217;t harm most turf. It&#8217;s a potent product that penetrates plants within two days. Nutsedge will slowly deteriorate and die within weeks. Mixing is made simple because Sedgehammer comes in packets that already include a surfactant.<\/p>    <p class=\"wp-block-paragraph\"><strong>How fast does it work? <\/strong>Nutsedge starts turning brown within two weeks and dies within 4 weeks. One application is typically enough, but some situations may require additional applications.<\/p>    <p class=\"wp-block-paragraph\"><strong>Where can you use it? <\/strong>It treats established lawns, ornamental turfgrass, landscaping, parks, and sports fields.&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>What&#8217;s the application rate?<\/strong> Mix 1 packet (1.33 oz.) with 1 gallon of water to cover 1,000 square feet.&nbsp;<\/p>    <h4 class=\"wp-block-heading\" id=\"20-specifications\">Specifications<\/h4>    <ul class=\"wp-block-list\"> <li><strong>Active ingredient<\/strong>: Halosulfuron-methyl<\/li>    <li><strong>Application<\/strong>: Sprayer<\/li>    <li><strong>Coverage:<\/strong> 1,000 sq. ft.<\/li>    <li><strong>Form:<\/strong> Water-soluble<\/li>    <li><strong>Herbicide type:<\/strong> Selective, Systemic<\/li>    <li><strong>Size:<\/strong> 27.22 grams<\/li>    <li><strong>Targeted weeds<\/strong>: Sedges including purple and yellow nutsedge<\/li> <\/ul>    <h4 class=\"wp-block-heading\" id=\"21-pros-and-cons\">Pros and Cons<\/h4>    <figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td><strong>What we liked&nbsp;<\/strong><\/td><td><strong>What we didn\u2019t like<\/strong><\/td><\/tr><tr><td>\u2713 Very effective against nutsedge<br>\u2713 Easy to measure and mix<br>\u2713 Safe for most grass types<br>\u2713 Controls kyllinga and horsetail<\/td><td>\u2717 Doesn\u2019t kill many broadleaf weeds<br>\u2717 Expensive<\/td><\/tr><\/tbody><\/table><\/figure>    <h3 class=\"wp-block-heading\" id=\"22-8-scotts-weedex-southern-best-granular-weed-killer\">8. Scotts WeedEx Southern &#8211; Best Granular Weed Killer<\/h3>    <div id=\"product-card-block_4ad9db71239cd3fad6f48c4feabe5c1e\" style=\"border-color: #ffffff;\"     class=\"product-card  relative z-20 rounded-md  border bg-white px-4 py-8 md:flex md:gap-10 md:items-start mt-16\">                  <!-- Logo -->         <img decoding=\"async\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/04\/Scotts-WeedEx-Southern.jpg?wsr\" alt=\"Scotts WeedEx Southern\"             class=\"w-full max-w-[200px] grow mx-auto md:mx-0 my-0\">          <div class=\"shrink\">                     <h3 x-bind=\"disableNextAndPreviousButtons\" class=\"my-0 text-base font-semibold line-clamp-2 lg:line-clamp-3\">                 Scotts WeedEx Southern<\/h3>                           <p>Scotts\u00ae WeedEx\u2122 Southern: Kills tough Southern weeds like dollarweed and clover. Controls over 25 listed weeds. Safe for specific grass types.<\/p>          <div             class=\"flex flex-wrap flex-col space-y-4 justify-center items-center mt-auto md:flex-row md:space-y-0 md:gap-8 md:justify-start\">                             <a href=\"https:\/\/sovrn.co\/14lj2oi\"                     target=\"_blank\"                     class=\"no-underline whitespace-nowrap px-4 py-2 text-white bg-theme-green hover:bg-theme-green-dark transition-colors rounded-full text-base inline-block text-center\">Buy on Lowe&#8217;s<\/a>                                               <\/div>     <\/div> <\/div>   <p class=\"wp-block-paragraph\">Our favorite granular post-emergent herbicide is Scotts WeedEx Southern. It controls over 25 common lawn weeds, including dollarweed, clover, oxtail, and chickweed. It also kills winter weeds such as henbit and evening primrose. The granules are easy to apply and safe on sensitive southern lawns.<\/p>    <p class=\"wp-block-paragraph\"><strong>How fast does it work? <\/strong>It takes 2 to 6 weeks to work.&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>Where can you use it? <\/strong>It treats lawns with the following warm-season grasses:<\/p>    <ul class=\"wp-block-list\"> <li>St. Augustine (including Floratam)<\/li>    <li>Centipedegrass<\/li>    <li>Zoysiagrass<\/li>    <li>Carpetgrass<\/li> <\/ul>    <p class=\"wp-block-paragraph\"><strong>What&#8217;s the application rate?<\/strong> The granules don&#8217;t need mixing, but be sure to water the lawn after application. Apply with a broadcast spreader set on 5 or a drop spreader with an 11.5 setting.&nbsp;<\/p>    <h4 class=\"wp-block-heading\" id=\"23-specifications\">Specifications<\/h4>    <ul class=\"wp-block-list\"> <li><strong>Active ingredient<\/strong>: Atrazine<\/li>    <li><strong>Application<\/strong>: Spreader<\/li>    <li><strong>Coverage:<\/strong> 4,000 sq. ft.<\/li>    <li><strong>Form:<\/strong> Granular&nbsp;<\/li>    <li><strong>Herbicide type:<\/strong> Selective, Systemic<\/li>    <li><strong>Size:<\/strong> 12.5 lb.<\/li>    <li><strong>Targeted weeds<\/strong>: Annual grasses and broadleaf weeds<\/li> <\/ul>    <h4 class=\"wp-block-heading\" id=\"24-pros-and-cons\">Pros and Cons<\/h4>    <figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td><strong>What we liked&nbsp;<\/strong><\/td><td><strong>What we didn\u2019t like<\/strong><\/td><\/tr><tr><td>\u2713 Safe on sensitive warm season grasses<br>\u2713 Effective on over 25 common lawn weeds<br>\u2713 Prevents new weeds from sprouting<br>\u2713 Works on winter weeds<br>\u2713 Easy to apply evenly<\/td><td>\u2717 Not for cool-season grass<br>\u2717 Treats less weeds than most products&nbsp;<br>\u2717 Toxic to aquatic life<\/td><\/tr><\/tbody><\/table><\/figure>    <h2 class=\"wp-block-heading\" id=\"25-buyer%E2%80%99s-guide\">Buyer\u2019s Guide<\/h2>    <p class=\"wp-block-paragraph\">To purchase the best weed killer, please consider the following:<\/p>    <ul class=\"wp-block-list\"> <li><a href=\"#26-types-of-herbicides\">Types of herbicides<\/a><\/li>    <li><a href=\"#27-chemical-ingredients\">Chemical ingredients<\/a><\/li>    <li><a href=\"#28-organic-ingredients\">Organic Ingredients<\/a><\/li>    <li><a href=\"#29-types-of-weeds\">Types of weeds<\/a><\/li>    <li><a href=\"#30-grass-type\">Grass type<\/a><\/li>    <li><a href=\"#31-prices\">Prices<\/a><\/li> <\/ul>    <h3 class=\"wp-block-heading\" id=\"26-types-of-herbicides\">Types of Herbicides<\/h3>    <p class=\"wp-block-paragraph\">Herbicides come in two major varieties:<\/p>    <ul class=\"wp-block-list\"> <li><strong>Post-emergent herbicides<\/strong> kill weeds after they sprout. If you want to get rid of visible weeds, you\u2019re in the right place.<\/li> <\/ul>    <ul class=\"wp-block-list\"> <li><strong>Pre-emergent herbicides<\/strong> prevent weeds from germinating. If you want to attack weeds before they sprout, you need the <a href=\"https:\/\/www.lawnstarter.com\/blog\/reviews\/best-pre-emergent-herbicides\/\">best weed preventers<\/a>.&nbsp;<\/li> <\/ul>    <p class=\"wp-block-paragraph\">When selecting a <strong>type of post-emergent<\/strong> weed killer, you have the following choices:<\/p>    <ul class=\"wp-block-list\"> <li><strong>Liquid vs. Granular:<\/strong> Liquid and granular herbicides each have advantages, so the decision often boils down to preference. Liquids tend to <a href=\"https:\/\/turf.purdue.edu\/wp-content\/uploads\/2012\/06\/05_AGRY_Patton_granular20herbicide.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">work better<\/a>, but it\u2019s easier to apply granules evenly.&nbsp;<\/li> <\/ul>    <ul class=\"wp-block-list\"> <li><strong>Selective vs. Non-selective: <\/strong>Selective herbicides target specific weeds, and non-selective herbicides can kill anything. Stick with selective products on your lawn so the grass doesn&#8217;t die.<\/li> <\/ul>    <ul class=\"wp-block-list\"> <li><strong>Systemic vs. Contact:<\/strong> Contact herbicides kill what they touch. In contrast, <a href=\"https:\/\/hort.ifas.ufl.edu\/yourfloridalawn\/weed_management_chemical.shtml#:~:text=Systemic%20herbicides%20are,and%20sethoxydim%20(Vantage).\" target=\"_blank\" rel=\"noreferrer noopener\">plants absorb systemic herbicides<\/a>, so the poison circulates through its vascular system. Systemic products take longer to work but do a thorough job. <a href=\"https:\/\/acis.cals.arizona.edu\/agricultural-ipm\/vegetables\/vipm-archive\/vipm-weeds-view\/contact-herbicides\" target=\"_blank\" rel=\"noreferrer noopener\">Contact products<\/a> tend to be non-selective and are best for spot treatments, such as growth through a sidewalk crack.&nbsp;<\/li> <\/ul>    <ul class=\"wp-block-list\"> <li><strong>Chemical vs. Organic:<\/strong> Many organic herbicides kill broadleaf weeds, but they aren\u2019t good at <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/36243622\/\" target=\"_blank\" rel=\"noreferrer noopener\">eliminating crabgrass<\/a> and other grassy weeds. Chemical herbicides are more effective, but they <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/36243622\/\">harm the ecosystem<\/a>.&nbsp;<\/li> <\/ul>    <h3 class=\"wp-block-heading\" id=\"27-chemical-ingredients\">Chemical Ingredients<\/h3>    <p class=\"wp-block-paragraph\"><strong>Selective <\/strong>post-emergent herbicides include:<\/p>    <ul class=\"wp-block-list\"> <li><strong>2,4-D <\/strong>systemically<strong> <\/strong>kills broadleaf weeds. When appropriately used, it&#8217;s safe on turfgrass, gardens, and farms. Weeds absorb it through their root system, causing a cancer-like condition that kills the plant within 2 weeks.&nbsp;<\/li> <\/ul>    <ul class=\"wp-block-list\"> <li><strong>Atrazine<\/strong> is a pre- and post-emergent product that systemically kills broadleaf weeds and grasses.<\/li> <\/ul>    <ul class=\"wp-block-list\"> <li><strong>Dicamba <\/strong>kills annual and perennial weeds, including broadleaf and woody plants. It works on lawns, crops, and pastures, typically within 2 to 3 weeks.<\/li> <\/ul>    <ul class=\"wp-block-list\"> <li><strong>Halosulfuron-methyl<\/strong> is a systemic herbicide that <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/how-to-control-nutsedge\/\">kills nutsedge<\/a> in three to four weeks.<\/li> <\/ul>    <ul class=\"wp-block-list\"> <li><strong>Monosodium<\/strong> <strong>Methanearsonate (MSMA) <\/strong>kills grassy and broadleaf weeds. It&#8217;s arsenic-based and the <a href=\"https:\/\/www.epa.gov\/ingredients-used-pesticide-products\/monosodium-methanearsonate-msma-organic-arsenical#:~:text=Following%20application%2C%20organic%20arsenicals%20like%20MSMA%20convert,100%2Dfoot%20buffer%20around%20permanent%20water%20bodies.\" target=\"_blank\" rel=\"noreferrer noopener\">EPA warns<\/a> it can contaminate drinking water.&nbsp;<\/li> <\/ul>    <ul class=\"wp-block-list\"> <li><strong>Quinclorac<\/strong> kills broadleaf and grassy weeds, including crabgrass. It typically takes 10 to 14 days to work.&nbsp;<\/li> <\/ul>    <ul class=\"wp-block-list\"> <li><strong>Triclopyr<\/strong> kills broadleaf weeds and woody plants in lawns and landscaping. It&#8217;s a systemic herbicide that takes up to three weeks to work.<\/li> <\/ul>    <p class=\"wp-block-paragraph\"><strong>Non-selective <\/strong>post-emergent herbicides include:<\/p>    <ul class=\"wp-block-list\"> <li><strong>Glufosinate <\/strong>is a fast-acting contact herbicide that kills plants within a few days. It\u2019s the best non-selective herbicide for many broadleaf weeds.&nbsp;<\/li> <\/ul>    <ul class=\"wp-block-list\"> <li><strong>Glyphosate<\/strong> kills most vegetation within 14 days. It controls annual grasses better than Glufosinate.&nbsp;<\/li> <\/ul>    <ul class=\"wp-block-list\"> <li><strong>Imazapyr<\/strong> is a systemic herbicide that works well in wet climates. It takes a few weeks to several months to kill perennial grasses, broadleaf herbs, woody plants, and aquatic\/wetland vegetation.&nbsp;<\/li> <\/ul>    <h3 class=\"wp-block-heading\" id=\"28-organic-ingredients\">Organic Ingredients<\/h3>    <p class=\"wp-block-paragraph\">Organic herbicides typically work on contact. Each ingredient&#8217;s effectiveness varies from plant to plant, but most <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/natural-weed-killers-a-guide-to-organic-herbicides\/\">natural weed killers<\/a> are considered non-selective. Some are safe on turfgrass or landscaping, as indicated on the product label.&nbsp;&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>Organic weed killers<\/strong> include:<\/p>    <ul class=\"wp-block-list\"> <li><strong>Ammonium nonanoate <\/strong>is a fatty acid in plants and animals. It kills some plants, such as grass and vines, within hours.<\/li> <\/ul>    <ul class=\"wp-block-list\"> <li><strong>Caprylic acid<\/strong> is a fatty acid from palm oil, coconut oil, or milk. It works best on small weeds and starts killing things within hours.&nbsp;<\/li> <\/ul>    <ul class=\"wp-block-list\"> <li><strong>Citrus oil<\/strong> is a degreaser that kills broadleaf weeds, crabgrass, and other weeds.<\/li> <\/ul>    <ul class=\"wp-block-list\"> <li><strong>Iron-HEDTA<\/strong> <a href=\"https:\/\/extension.umd.edu\/resource\/iron-based-herbicides\/\" target=\"_blank\" rel=\"noreferrer noopener\">selectively targets<\/a> broadleaf weeds and algae.<\/li> <\/ul>    <ul class=\"wp-block-list\"> <li><strong>Salt (sodium chloride)<\/strong> dehydrates and eliminates broadleaf and grassy weeds.&nbsp;<\/li> <\/ul>    <ul class=\"wp-block-list\"> <li><strong>Vinegar<\/strong> typically kills plants within a week. It\u2019s often mixed with citric acid to increase its effectiveness.&nbsp;<\/li> <\/ul>    <h3 class=\"wp-block-heading\" id=\"29-types-of-weeds\">Types of Weeds<\/h3>    <p class=\"wp-block-paragraph\">The table below lists the post-emergent products we recommend by weed type.<\/p>    <figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td><strong>Weed<\/strong><\/td><td><strong>Best products<\/strong><\/td><\/tr><tr><td>Broadleaf plantain<\/td><td>2,4-D Amine, Gordon\u2019s Trimec, Captain Jack&#8217;s, RM43<\/td><\/tr><tr><td>Bull thistle<\/td><td>2,4-D Amine, Gordon\u2019s Trimec, Captain Jack&#8217;s, RM43<\/td><\/tr><tr><td>Chickweed<\/td><td>2,4-D Amine, Gordon\u2019s Trimec, Quali-Pro Quinclorac, Captain Jack&#8217;s, Scotts WeedEx, RM43, Earth&#8217;s Ally Weed and Grass Killer<\/td><\/tr><tr><td>Clover<\/td><td>Gordon\u2019s Trimec, Quali-Pro Quinclorac, Captain Jack&#8217;s, Scotts WeedEx, RM43, Earth&#8217;s Ally Weed and Grass Killer<\/td><\/tr><tr><td>Crabgrass<\/td><td>Quali-Pro Quinclorac, RM43, Earth&#8217;s Ally Weed and Grass Killer<\/td><\/tr><tr><td>Dandelion<\/td><td>2,4-D Amine, Gordon\u2019s Trimec, Quali-Pro Quinclorac, Captain Jack&#8217;s, Scotts WeedEx, RM43, Earth&#8217;s Ally Weed and Grass Killer<\/td><\/tr><tr><td>Dollarweed<\/td><td>Gordon\u2019s Trimec, Quali-Pro Quinclorac, Scotts WeedEx, RM43<\/td><\/tr><tr><td>Hemlock<\/td><td>Gordon\u2019s Trimec, RM43<\/td><\/tr><tr><td>Kudzu<\/td><td>RM43<\/td><\/tr><tr><td>Nutsedge<\/td><td>Sedgehammer&nbsp;<\/td><\/tr><tr><td>Poa Annua (annual bluegrass)<\/td><td>RM43<\/td><\/tr><tr><td>Poison ivy<\/td><td>2,4-D Amine, Gordon\u2019s Trimec, RM43<\/td><\/tr><tr><td>Smartweed<\/td><td>2,4-D Amine, Gordon\u2019s Trimec, RM43<\/td><\/tr><tr><td>Wild onion<\/td><td>2,4-D Amine, Gordon\u2019s Trimec, RM43<\/td><\/tr><\/tbody><\/table><\/figure>    <h3 class=\"wp-block-heading\" id=\"30-grass-type\">Grass Type<\/h3>    <p class=\"wp-block-paragraph\">Most turf herbicides are safe on cool-season grasses. However, homeowners with warm-season grasses, such as St. Augustine and centipede, must be more careful. Always read the product label to ensure your grass type is listed as safe, and only use the herbicide as directed.&nbsp;<\/p>    <h3 class=\"wp-block-heading\" id=\"31-prices\">Prices<\/h3>    <p class=\"wp-block-paragraph\">Most post-emergent herbicides cost <strong>$10 to $140<\/strong>, but DIY <a href=\"https:\/\/www.lawnstarter.com\/blog\/cost\/weed-control-price\/\">weed control prices<\/a> depend on area coverage and weed killer type. The table below shows the average cost per 1,000 square feet of post-emergent products by herbicide type.<\/p>    <figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td><strong>Type<\/strong><\/td><td><strong>Average cost \/ 1,000 sq. ft.<\/strong><\/td><\/tr><tr><td>All post-emergent<\/td><td>$2.75<\/td><\/tr><tr><td>Selective<\/td><td>$2.10<\/td><\/tr><tr><td>Non-selective<\/td><td>$9.20<\/td><\/tr><tr><td>Organic<\/td><td>$12.70<\/td><\/tr><\/tbody><\/table><\/figure>    <h2 class=\"wp-block-heading\" id=\"32-faqs-about-post-emergent-herbicides\">FAQs About Post-Emergent Herbicides<\/h2>    <h3 class=\"wp-block-heading\" id=\"33-how-do-you-apply-post-emergent-herbicide\">How Do You Apply Post-Emergent Herbicide?<\/h3>    <p class=\"wp-block-paragraph\">To control weeds, read the product\u2019s directions. Carefully measure each herbicide application and distribute the weed killer evenly. Before <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/applying-post-emergent-herbicides-to-your-lawn\/\">applying post-emergent weed killer<\/a>, also consider the following:<\/p>    <ul class=\"wp-block-list\"> <li><strong>When to apply:<\/strong> Apply to weeds that have sprouted during the growing season. Most weeds germinate early spring through summer.<\/li> <\/ul>    <ul class=\"wp-block-list\"> <li><strong>How to apply liquid herbicides:<\/strong> Apply liquids with a sprayer. Most are concentrated and thus mixed with water, but some come ready to use. Ready-to-use products typically come in packaging that has a trigger sprayer. Some concentrated formulas come in packaging that attaches to a garden hose for easy application.<\/li> <\/ul>    <ul class=\"wp-block-list\"> <li><strong>How to apply granular herbicides:<\/strong> Apply granules with a drop or broadcast spreader. We found the <a href=\"https:\/\/www.lawnstarter.com\/blog\/reviews\/best-fertilizer-spreaders\/\">best spreaders<\/a> for evenly applying granular products.<\/li> <\/ul>    <ul class=\"wp-block-list\"> <li><strong>When to use a surfactant:<\/strong> Liquid products sometimes need it to spread properly. Most liquid contact weed killers need a surfactant, but some products already have one. Read the application instructions to be sure.&nbsp;&nbsp;<\/li> <\/ul>    <h3 class=\"wp-block-heading\" id=\"34-does-corn-gluten-meal-kill-weeds\">Does Corn Gluten Meal Kill Weeds?<\/h3>    <p class=\"wp-block-paragraph\">Corn gluten meal is a pre-emergent pesticide. It<strong> <\/strong>doesn\u2019t kill weeds after they sprout, but it<strong> <\/strong>prevents grassy and broadleaf lawn weeds, including crabgrass. It also feeds lawns slow-release nitrogen, so many homeowners use <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/corn-gluten-meal-natural-weed-and-feed\/\">CGM as a natural weed and feed<\/a>.&nbsp;<\/p>    <h3 class=\"wp-block-heading\" id=\"35-how-do-you-make-homemade-weed-killer\">How do you make homemade weed killer?<\/h3>    <p class=\"wp-block-paragraph\">Using our <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/how-to-make-homemade-weed-killer\/\">weed killer recipes<\/a>, you can make non-selective, post-emergent, contact herbicides from the following ingredients:<\/p>    <ul class=\"wp-block-list\"> <li>Vinegar<\/li>    <li>Lemon juice<\/li>    <li>Salt<\/li>    <li>Dish soap<\/li> <\/ul>    <h2 class=\"wp-block-heading\" id=\"36-when-to-call-a-lawn-treatment-pro\">When to Call a Lawn Treatment Pro<\/h2>    <p class=\"wp-block-paragraph\">Controlling lawn weeds doesn&#8217;t have to be complicated. Before you spend a heap of cash on fancy equipment and pungent products, it&#8217;s essential to consider all your options. LawnStarter connects you with affordable and insured <a href=\"https:\/\/www.lawnstarter.com\/landscaping\/lawn-treatment\">local lawn treatment pros<\/a>.&nbsp;<\/p>    <p class=\"wp-block-paragraph\">We only work with qualified contractors who apply treatments safely and effectively. In addition to weed control, our pros handle lawn mowing, bush trimming, and over 30 other outdoor services. It only takes a moment to get an online quote and schedule services, so your lawn will look lush in no time.<\/p>   <div class=\"wp-block-ub-content-toggle wp-block-ub-content-toggle-block\" id=\"ub-content-toggle-block-86325240-3d8f-4806-bdc5-2e862c794599\" data-mobilecollapse=\"false\" data-desktopcollapse=\"true\" data-preventcollapse=\"false\" data-showonlyone=\"true\"> <div class=\"wp-block-ub-content-toggle-accordion\" style=\"border-color: #f1f1f1; \" id=\"ub-content-toggle-panel-block-\"> \t\t\t<div class=\"wp-block-ub-content-toggle-accordion-title-wrap\" style=\"background-color: #f1f1f1;\" aria-controls=\"ub-content-toggle-panel-0-86325240-3d8f-4806-bdc5-2e862c794599\" tabindex=\"0\"> \t\t\t<p class=\"wp-block-ub-content-toggle-accordion-title ub-content-toggle-title-86325240-3d8f-4806-bdc5-2e862c794599\" style=\"color: #000000; \">References:<\/p> \t\t\t<div class=\"wp-block-ub-content-toggle-accordion-toggle-wrap right\" style=\"color: #000000;\"><span class=\"wp-block-ub-content-toggle-accordion-state-indicator wp-block-ub-chevron-down\"><\/span><\/div> \t\t<\/div> \t\t\t<div role=\"region\" aria-expanded=\"false\" class=\"wp-block-ub-content-toggle-accordion-content-wrap ub-hide\" id=\"ub-content-toggle-panel-0-86325240-3d8f-4806-bdc5-2e862c794599\">  <ol class=\"wp-block-list\"> <li>&#8220;<a href=\"https:\/\/turf.purdue.edu\/wp-content\/uploads\/2012\/06\/05_AGRY_Patton_granular20herbicide.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Do Granular Herbicide Applications Effectively Control Broadleaf Weeds in Turf?<\/a>.&#8221; <em>Turfgrass Science<\/em>. Purdue University.\u00a0<\/li>    <li>Chinery, David et al. (2012). \u201c<a href=\"https:\/\/ecommons.cornell.edu\/items\/625e42ab-9510-44c7-8548-edc4e3703bfd\" target=\"_blank\" rel=\"noreferrer noopener\">Examination of a new iron-based herbicide for broadleaf weed management<\/a>.\u201d <em>Cornell University Library<\/em><\/li>    <li>Gardner, Dr. Dave. (2019, March 13). &#8220;<a href=\"https:\/\/u.osu.edu\/athleticfieldmanagement\/2019\/03\/13\/organic-vs-synthetic-herbicides-for-athletic-field-weed-management\/\" target=\"_blank\" rel=\"noreferrer noopener\">Organic Vs Synthetic Herbicides for Athletic Field Weed Management<\/a>.&#8221; <em>Sports Turf Management: Research, Education &amp; Outreach<\/em>. College of Food, Agriculture, and Environmental Sciences. The Ohio State University\u00a0<\/li>    <li>&#8220;<a href=\"https:\/\/www.epa.gov\/ingredients-used-pesticide-products\/monosodium-methanearsonate-msma-organic-arsenical\" target=\"_blank\" rel=\"noreferrer noopener\">Monosodium Methanearsonate (MSMA), an Organic Arsenical<\/a>.&#8221;\u00a0 <em>Ingredients Used in Pesticide Products<\/em>. U.S. Environmental Protection Agency<\/li>    <li>Pena, Marco. (2021, January 27). &#8220;<a href=\"https:\/\/acis.cals.arizona.edu\/agricultural-ipm\/vegetables\/vipm-archive\/vipm-weeds-view\/contact-herbicides\" target=\"_blank\" rel=\"noreferrer noopener\">Contact Herbicides<\/a>.&#8221; <em>Arizona Pest Management Center<\/em>. The University of Arizona<\/li>    <li>Ruuskanen, Suvi et al. (2022, October 13). &#8220;<a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/36243622\/\" target=\"_blank\" rel=\"noreferrer noopener\">Ecosystem consequences of herbicides: the role of microbiome<\/a>.&#8221; <em>PubMed<\/em>. National Library of Medicine. National Institutes of Health<\/li>    <li>Smith-Fiola, Deborah et al. (2022, May 2). &#8220;<a href=\"https:\/\/extension.umd.edu\/resource\/iron-based-herbicides\/\" target=\"_blank\" rel=\"noreferrer noopener\">Iron-based Herbicides: Alternative Materials for Weed Control in Landscapes and Lawns<\/a>.&#8221; <em>University of Maryland Extension<\/em><\/li>    <li>&#8220;<a href=\"https:\/\/hort.ifas.ufl.edu\/yourfloridalawn\/weed_management_chemical.shtml#\" target=\"_blank\" rel=\"noreferrer noopener\">Weed Management: Chemical<\/a>.&#8221; <em>Your Florida Lawn: Residential Landscapes<\/em>. Turfgrass Science Program. Institute of Food and Agricultural Sciences. University of Florida\u00a0<\/li> <\/ol>  <\/div> \t\t<\/div> <\/div>   <p class=\"wp-block-paragraph\"><em><em>LawnStarter participates in the Amazon Services LLC Associates Program and other retailer affiliate programs. LawnStarter may earn revenue from products promoted in this article.<\/em><\/em><\/p>    <p class=\"wp-block-paragraph\">Main Image Credit:&nbsp;<a href=\"https:\/\/www.canva.com\/photos\/MAEEFA8pjns-spraying-herbicide-on-dandelion\/\" target=\"_blank\" rel=\"noreferrer noopener\">Onfokus<\/a>&nbsp;\/ Canva Pro \/&nbsp;<a href=\"https:\/\/www.canva.com\/policies\/content-license-agreement\/\" target=\"_blank\" rel=\"noreferrer noopener\">License<\/a>&nbsp;wih Text Overlay using Canva Pro<\/p>","protected":false},"excerpt":{"rendered":"<p>Gordon&#8217;s Trimec and 2,4-D Amine are the best post-emergent herbicides for lawns. RM43 kills everything, and Earth&#8217;s Ally is the best for garden beds.<\/p>\n","protected":false},"author":101,"featured_media":113310,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1275],"tags":[1461],"class_list":["post-41561","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-reviews","tag-product-reviews"],"acf":[],"featured_image_src":"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2021\/11\/Best-Post-Emergent-Herbicides.jpg?wsr","author_info":{"display_name":"Michelle Selzer","author_link":"https:\/\/www.lawnstarter.com\/blog\/author\/michelle-selzer\/"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>8 Best Post-Emergent Herbicides of 2026 [Reviews]<\/title>\n<meta name=\"description\" content=\"Gordon&#039;s Trimec and 2,4-D Amine are the best post-emergent herbicides for lawns. 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