{"id":93064,"date":"2026-08-13T17:09:20","date_gmt":"2026-08-13T20:09:20","guid":{"rendered":"https:\/\/www.lawnstarter.com\/blog\/?p=93064"},"modified":"2026-08-17T20:26:16","modified_gmt":"2026-08-17T23:26:16","slug":"common-weeds-oklahoma","status":"publish","type":"post","link":"https:\/\/www.lawnstarter.com\/blog\/oklahoma\/common-weeds-oklahoma\/","title":{"rendered":"18 Most Common Weeds in Oklahoma: How to Identify and Control Them"},"content":{"rendered":"<figure class=\"wp-block-table is-style-stripes has-medium-font-size\"><table class=\"has-fixed-layout\"><thead><tr><th><strong>Key Takeaways<\/strong><\/th><\/tr><\/thead><tbody><tr><td>\u2022 <strong>Oklahoma&#8217;s most common lawn weeds<\/strong> fall into 2 categories: broadleaf weeds and grassy weeds, and the category determines which herbicide you need.<br>\u2022 <strong>Timing your herbicide application<\/strong> to the weed&#8217;s life cycle is the single most important factor in effective weed control.<br>\u2022 <strong>A thick, healthy lawn<\/strong> is your best long-term defense, since dense turf naturally outcompetes most common Oklahoma species.<\/td><\/tr><\/tbody><\/table><\/figure>    <p class=\"wp-block-paragraph\">Oklahoma lawns deal with 2 main categories of weeds: <strong>broadleaf weeds<\/strong> (wide, flat leaves like dandelions and henbit) and <strong>grassy weeds<\/strong> (narrow blades that look like turfgrass, such as crabgrass and dallisgrass).<\/p>    <p class=\"wp-block-paragraph\">The category matters because the herbicides that kill one type will not work on the other. Choosing the wrong herbicide can waste money and stress your turf.<\/p>    <p class=\"wp-block-paragraph\">LawnStarter&#8217;s <a href=\"https:\/\/signup-web.lawnstarter.com\/cart\/contact-info?intent=fertilization\">lawn treatment service<\/a> handles pre-emergent and post-emergent weed applications, along with the rest of the seasonal schedule.<\/p>   <div class=\"wp-block-ub-table-of-contents-block ub_table-of-contents\" id=\"ub_table-of-contents-a315453c-dcf2-4dc5-b7c6-acb3e0dbf644\" data-linktodivider=\"false\" data-showtext=\"show\" data-hidetext=\"hide\" data-scrolltype=\"auto\" data-enablesmoothscroll=\"false\" data-initiallyhideonmobile=\"false\" data-initiallyshow=\"true\"><div class=\"ub_table-of-contents-header-container\" style=\"\"> \t\t\t<div class=\"ub_table-of-contents-header\" style=\"text-align: left; \"> \t\t\t\t<div class=\"ub_table-of-contents-title\" style=\"\">In this article:<\/div> \t\t\t\t \t\t\t<\/div> \t\t<\/div><div class=\"ub_table-of-contents-extra-container\" style=\"\"> \t\t\t<div class=\"ub_table-of-contents-container ub_table-of-contents-1-column\"> \t\t\t\t<ul style=\"\"><li style=\"\"><a href=\"https:\/\/www.lawnstarter.com\/blog\/oklahoma\/common-weeds-oklahoma\/#0-broadleaf-weeds\" style=\"\">Broadleaf Weeds<\/a><\/li><li style=\"\"><a href=\"https:\/\/www.lawnstarter.com\/blog\/oklahoma\/common-weeds-oklahoma\/#15-grassy-weeds\" style=\"\">Grassy Weeds<\/a><\/li><li style=\"\"><a href=\"https:\/\/www.lawnstarter.com\/blog\/oklahoma\/common-weeds-oklahoma\/#20-faqs\" style=\"\">FAQs<\/a><\/li><\/ul> \t\t\t<\/div> \t\t<\/div><\/div>   <h2 id=\"0-broadleaf-weeds\" class=\"wp-block-heading\">Broadleaf Weeds<\/h2>    <p class=\"wp-block-paragraph\">Broadleaf weeds have wide, flat leaves with visible veins and often produce flowers. These weeds are controlled with selective broadleaf herbicides containing 2,4-D, dicamba, or mecoprop that target weeds without harming turfgrass.<\/p>    <figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Weed<\/strong><\/td><td><strong>Key Identifier<\/strong><\/td><td><strong>When It Appears<\/strong><\/td><\/tr><tr><td>Henbit<\/td><td>Purple tubular flowers, square stems<\/td><td>Late winter<\/td><\/tr><tr><td>Dandelion<\/td><td>Yellow flowers, puffball seed heads<\/td><td>Early spring<\/td><\/tr><tr><td>Chickweed<\/td><td>Small white star-shaped flowers<\/td><td>Fall<\/td><\/tr><tr><td>Spotted Spurge<\/td><td>Brown spot on leaf center<\/td><td>Summer<\/td><\/tr><tr><td>Ragweed<\/td><td>Fern-like leaves, hairy stems<\/td><td>Late spring to summer<\/td><\/tr><\/tbody><\/table><\/figure>    <h3 id=\"1-henbit-lamium-amplexicaule-\" class=\"wp-block-heading\">Henbit (<em>Lamium amplexicaule<\/em>)<\/h3>    <figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/wp.wikilawn.com\/wp-content\/uploads\/2019\/06\/Henbit.jpg\" alt=\"closeup image of purple flowers in a garden\"\/><figcaption class=\"wp-element-caption\">Henbit flowers. Photo Credit: <a target=\"_blank\" href=\"https:\/\/www.flickr.com\/photos\/aries_tottle\/8546779930\">Miltos Gikas<\/a> \/ Flickr \/ CC BY 2.0<\/figcaption><\/figure>    <p class=\"wp-block-paragraph\">Henbit is one of Oklahoma&#8217;s most common late-winter weeds. A member of the mint family, it thrives in cool, wet weather from January through March.<\/p>    <p class=\"wp-block-paragraph\"><strong>Life cycle:<\/strong> Winter annual<\/p>    <p class=\"wp-block-paragraph\"><strong>How to identify henbit:<\/strong> Hairy, rounded leaves with deep veins. Square stems. Purple, tubular flowers.<\/p>    <p class=\"wp-block-paragraph\"><strong>How to get rid of henbit:<\/strong>&nbsp;Apply pre-emergent in early to mid-September. Apply post-emergent in October or November&nbsp;if missed. Corn gluten meal in late summer works as an organic pre-emergent.<\/p>    <h3 id=\"2-dandelion-taraxacum-officinale-\" class=\"wp-block-heading\">Dandelion (<em>Taraxacum officinale<\/em>)<\/h3>    <figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2022\/08\/rsz_dandelions-g65abded2b_1280.jpg\" alt=\"Dandelion Flowers\"\/><figcaption class=\"wp-element-caption\">Dandelion flowers. Photo Credit:&nbsp;<a target=\"_blank\" href=\"https:\/\/pixabay.com\/sk\/photos\/p%c3%bapavy-kvety-p%c3%bapava-jar-pr%c3%adroda-5183631\/\">Pixabay<\/a><\/figcaption><\/figure>    <p class=\"wp-block-paragraph\">Dandelion&#8217;s taproot grows deep and regenerates if you pull only the top. A single plant can produce hundreds of wind-carried seeds.<\/p>    <p class=\"wp-block-paragraph\"><strong>Life cycle:<\/strong> Winter perennial&nbsp;&nbsp; <\/p>    <p class=\"wp-block-paragraph\"><strong>How to identify dandelion:<\/strong> Bright yellow flowers, puffball seed heads, long serrated leaves pointing to the rosette center. Its presence can indicate acidic soil, making <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/why-soil-testing-is-important-for-lawn\/\">soil testing<\/a> a smart first step.<\/p>    <p class=\"wp-block-paragraph\"><strong>How to get rid of dandelion:<\/strong> Dig out the taproot in early spring. A broadleaf post-emergent herbicide during fall is generally more effective on perennials.<\/p>    <h3 id=\"3-common-chickweed-stellaria-media-\" class=\"wp-block-heading\">Common Chickweed (<em>Stellaria media<\/em>)<\/h3>    <figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2022\/07\/rsz_1280px-stellaria_media_common_chickweed_%E1%83%9F%E1%83%A3%E1%83%9C%E1%83%9F%E1%83%A0%E1%83%A3%E1%83%99%E1%83%98-2.jpg\" alt=\"Common Chickweed\"\/><figcaption class=\"wp-element-caption\">Common chickweed. Photo Credit:&nbsp;<a href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Stellaria_media_Common_Chickweed_%E1%83%9F%E1%83%A3%E1%83%9C%E1%83%9F%E1%83%A0%E1%83%A3%E1%83%99%E1%83%98.JPG\" target=\"_blank\" rel=\"noreferrer noopener\">Lazaregagnidze<\/a>&nbsp;\/ Wikimedia Commons \/&nbsp;<a href=\"https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/deed.en\" target=\"_blank\" rel=\"noreferrer noopener\">CC BY-SA 4.0<\/a><\/figcaption><\/figure>    <p class=\"wp-block-paragraph\">Chickweed emerges in fall and can creep into your lawn, creating large, dense patches&nbsp;if left untreated.<\/p>    <p class=\"wp-block-paragraph\"><strong>Life cycle:<\/strong> Winter annual&nbsp;&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>How to identify chickweed:<\/strong> Slim stems with fine hairs on one side. Small white flowers&nbsp;in clusters.<\/p>    <p class=\"wp-block-paragraph\"><strong>How to get rid of chickweed:<\/strong>&nbsp;Shallow roots make hand-pulling easy. Chickweed can be controlled with post-emergent herbicides during fall and early spring.<\/p>    <h3 id=\"4-curly-dock-rumex-crispus-\" class=\"wp-block-heading\">Curly Dock (<em>Rumex crispus<\/em>)<\/h3>    <figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2023\/06\/Curly-Dock.jpg\" alt=\"green leafed plant\"\/><figcaption class=\"wp-element-caption\">Curly dock in flower. Photo Credit: <a target=\"_blank\" href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Curled_dock_in_flower_%285363163780%29.jpg\">John Tann<\/a> \/ Wikimedia Commons \/ <a target=\"_blank\" href=\"https:\/\/creativecommons.org\/licenses\/by\/2.0\/deed.en\">CC BY 2.0<\/a><\/figcaption><\/figure>    <p class=\"wp-block-paragraph\">Curly dock can reach 2 to 3 feet tall. Its deep taproot intensifies growth when turfgrass is heat-stressed.<\/p>    <p class=\"wp-block-paragraph\"><strong>Life cycle:<\/strong> Summer perennial&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>How to identify curly dock:<\/strong> Light green leaves with wavy borders that gain a reddish hue. Small green flowers bloom in clusters.<\/p>    <p class=\"wp-block-paragraph\"><strong>How to get rid of curly dock:<\/strong> Apply a spring post-emergent herbicide when the plant is small. Fall applications are more effective once established, and multiple treatments may be needed.<\/p>    <h3 id=\"5-broadleaf-plantain-plantago-major-\" class=\"wp-block-heading\">Broadleaf Plantain (<em>Plantago major)<\/em><\/h3>    <figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/wp.wikilawn.com\/wp-content\/uploads\/2023\/05\/7557418892_a9b091f0d2_c-1.jpg\" alt=\"A close up of a beautiful broadleaf plantain \"\/><figcaption class=\"wp-element-caption\">Broadleaf plantain. Photo Credit:&nbsp;<a target=\"_blank\" href=\"https:\/\/www.flickr.com\/photos\/50697352@N00\/7557418892\">F. D. Richards<\/a> \/ Flickr \/ CC BY-SA 2.0<\/figcaption><\/figure>    <p class=\"wp-block-paragraph\">Plantain&#8217;s rosette grows close to the ground, crowding out turf and resisting mowing.<\/p>    <p class=\"wp-block-paragraph\"><strong>Life cycle:<\/strong> Summer perennial&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>How to identify plantain:<\/strong> Elliptical leaves that rest flat, with wavy borders and prominent veins. Small flowers along upward-pointing stems.<\/p>    <p class=\"wp-block-paragraph\"><strong>How to get rid of plantain:<\/strong> Short taproot makes hand pulling easy. Spot treatment with post-emergent herbicides also works.<\/p>    <h3 id=\"6-black-medic-medicago-lupulina-\" class=\"wp-block-heading\">Black Medic (<em>Medicago lupulina<\/em>)<\/h3>    <figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/wp.wikilawn.com\/wp-content\/uploads\/2023\/05\/Black-Medic-Medicago-Lupulina.jpg\" alt=\"Yellowe color small balck medic flower\"\/><figcaption class=\"wp-element-caption\">Black medic flower. Photo Credit: <a target=\"_blank\" href=\"https:\/\/www.flickr.com\/photos\/185800778@N06\/49188713647\">Lawn Weeds<\/a> \/ Flickr \/ CC BY 2.0<\/figcaption><\/figure>    <p class=\"wp-block-paragraph\">Frequently mistaken for white clover, black medic creeps into lawns with a deep taproot and prostrate stems.<\/p>    <p class=\"wp-block-paragraph\"><strong>Life cycle:<\/strong> Summer annual (can behave as perennial in mild winters) <\/p>    <p class=\"wp-block-paragraph\"><strong>How to identify black medic:<\/strong> 3 leaflets per leaf, similar to clover. Small yellow flowers in dense clusters.<\/p>    <p class=\"wp-block-paragraph\"><strong>How to get rid of black medic:<\/strong>&nbsp;Nitrogen fertilization is very effective at prevention. Post-emergent broadleaf herbicide for bigger infestations.<\/p>    <h3 id=\"7-prostrate-knotweed-polygonum-aviculare-\" class=\"wp-block-heading\">Prostrate Knotweed (<em>Polygonum aviculare<\/em>)<\/h3>    <figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2021\/10\/rsz_4985277262_92077c82a9_c.jpg\" alt=\"close up of prostrate knotweed\"\/><figcaption class=\"wp-element-caption\">Prostrate knotweed. Photo Credit: <a href=\"https:\/\/www.flickr.com\/photos\/plant_diversity\/4985277262\/\" target=\"_blank\">Matt Lavin<\/a> \/ Flickr \/ <a href=\"https:\/\/creativecommons.org\/licenses\/by-sa\/2.0\/deed.en\" target=\"_blank\" rel=\"noreferrer noopener\">CC BY-SA 2.0<\/a><\/figcaption><\/figure>    <p class=\"wp-block-paragraph\">If knotweed is in your lawn, it&#8217;s almost always a sign of soil compaction. LawnStarter&#8217;s <a href=\"https:\/\/signup-web.lawnstarter.com\/cart\/contact-info?intent=aeration\">aeration service<\/a> is the go-to fix when the soil is packed down, and water and grass roots can&#8217;t get where they need to go.<\/p>    <p class=\"wp-block-paragraph\"><strong>Life cycle:<\/strong> Summer annual&nbsp;&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>How to identify knotweed:<\/strong> Prostrate stems&nbsp;form a mat with &#8220;knotted&#8221; nodes. Tiny&nbsp;flowers bloom where the stem meets the leaf.<\/p>    <p class=\"wp-block-paragraph\"><strong>How to get rid of knotweed:<\/strong> Regular aeration, with typical <a href=\"https:\/\/www.lawnstarter.com\/blog\/cost\/lawn-aeration-price\/\">aeration cost<\/a> of $107 to $202, is your best defense. Once established, several post-emergent applications are usually necessary.<\/p>    <h3 id=\"8-purslane-portulaca-oleracea-\" class=\"wp-block-heading\">Purslane (<em>Portulaca oleracea<\/em>)<\/h3>    <figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2022\/07\/rsz_1024px-purslane_closeup.jpg\" alt=\"Purslane\"\/><figcaption class=\"wp-element-caption\">Purslane. Photo Credit: <a href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Purslane_closeup.JPG\" target=\"_blank\">John Comeau<\/a> \/ Wikimedia Commons \/ <a href=\"https:\/\/creativecommons.org\/licenses\/by-sa\/3.0\/deed.en\" target=\"_blank\">CC BY-SA 3.0<\/a><\/figcaption><\/figure>    <p class=\"wp-block-paragraph\">This&nbsp;warm-season annual forms a dense mat that shades turfgrass and spreads fast in thin lawns.<\/p>    <p class=\"wp-block-paragraph\"><strong>Life cycle:<\/strong> Summer annual&nbsp;&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>How to identify purslane:<\/strong> Red-brownish stems, shiny green wedge-shaped leaves, bright yellow flowers.<\/p>    <p class=\"wp-block-paragraph\"><strong>How to get rid of purslane:<\/strong>&nbsp;Hand-pull, use a <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/how-to-make-homemade-weed-killer\/\">homemade weed killer<\/a>, or spot-treat while young. Purslane doesn&#8217;t tolerate traffic or shade.<\/p>    <h3 id=\"9-spotted-spurge-euphorbia-maculata-\" class=\"wp-block-heading\">Spotted Spurge (<em>Euphorbia maculata<\/em>)<\/h3>    <figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2023\/06\/Spotted-Spurge.jpg\" alt=\"closeup image of spotted spurge\"\/><figcaption class=\"wp-element-caption\">Spotted spurge. Photo Credit: <a href=\"https:\/\/www.flickr.com\/photos\/cricketsblog\/51559716423\/in\/photolist-2mya2nZ-2zYXix-cJWPAQ-2cPmnoD-cJWPo5-63dY7K-63dYaV-2kHPN7u-63dY5t-63ie3N-63idMs-2kHQeBP-2n18PwH-WzdL3R-WjfyFL-VkD2RM-WjfynE-WvCwVL-VkDtER-Krgq65-KWSLPS-2kHPLKg-2kHL6A2-c3FN1N-VhYL4y-WvCqsW-a9nheL-VkD3vc-VYTHCY-WvCnko-WjfDbY-WjfBwW-Wzebd4-Wze3Gx-WnxcSP-WjfPD1-VYTJ47-WvCt23-WzeaEa-WvCypY-VkDoTM-WvCsHs-WjfPcj-Wze1Uz-WvChzG-VYTJnJ-WvCvAG-Wze2gM-WjfAyJ-Wnx8zR\" target=\"_blank\">Melissa McMasters<\/a> \/ Flickr \/ <a href=\"https:\/\/creativecommons.org\/licenses\/by\/2.0\/deed.en\" target=\"_blank\" rel=\"noreferrer noopener\">CC BY 2.0<\/a><\/figcaption><\/figure>    <p class=\"wp-block-paragraph\">Look for the distinctive brown spot in the center of each leaf. It produces enormous numbers of seeds, so early control is critical.<\/p>    <p class=\"wp-block-paragraph\"><strong>Life cycle:<\/strong> Summer annual<\/p>    <p class=\"wp-block-paragraph\"><strong>How to identify spurge:<\/strong> Brown spot in the leaf&nbsp;center. Milky sap when stems break.<\/p>    <p class=\"wp-block-paragraph\"><strong>How to get rid of spurge:<\/strong> Hand-pull single plants. Improve turf density through <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/when-to-overseed-spring\/\">overseeding in spring<\/a>, since according to the <a target=\"_blank\" href=\"https:\/\/www.udel.edu\/academics\/colleges\/canr\/cooperative-extension\/fact-sheets\/weed-control-in-turf\/\">University of Delaware Extension<\/a>, dense turf shades weed seeds and prevents them from germinating for long-term control.<\/p>    <h3 id=\"10-common-yarrow-achillea-millefolium-\" class=\"wp-block-heading\">Common Yarrow (<em>Achillea millefolium<\/em>)<\/h3>    <figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2020\/11\/image-170.jpeg\" alt=\"cluster of white yarrow flowers\"\/><figcaption class=\"wp-element-caption\">Yarrow flowers. Photo Credit:&nbsp;<a target=\"_blank\" href=\"https:\/\/pixabay.com\/photos\/achillea-millefolium-yarrow-848741\/\">Pixabay<\/a><\/figcaption><\/figure>    <p class=\"wp-block-paragraph\">Yarrow spreads through underground rhizomes and hugs the ground in dense patches that bounce back after mowing.<\/p>    <p class=\"wp-block-paragraph\"><strong>Life cycle:<\/strong> Summer perennial<\/p>    <p class=\"wp-block-paragraph\"><strong>How to identify yarrow:<\/strong> Fern-like leaves resembling cultivated carrots. Hairy stems. Distinctive herbal scent when crushed.<\/p>    <p class=\"wp-block-paragraph\"><strong>How to get rid of yarrow:<\/strong>&nbsp;Fertilizing to improve growing conditions is the most effective cultural approach.<\/p>    <h3 id=\"11-spiny-sowthistle-sonchus-asper-\" class=\"wp-block-heading\">Spiny Sowthistle (<em>Sonchus asper<\/em>)<\/h3>    <figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2023\/06\/Spiny-Sowthistle.jpg\" alt=\"closeup image of a green colored plant\"\/><figcaption class=\"wp-element-caption\">Spiny sowthistle. Photo Credit: <a target=\"_blank\" href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Asterales_-_Sonchus_asper_-_001.jpg\">Em\u0151ke D\u00e9nes<\/a> \/ Wikimedia Commons \/ <a target=\"_blank\" href=\"https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/deed.en\">CC BY-SA 4.0<\/a><\/figcaption><\/figure>    <p class=\"wp-block-paragraph\">Spiny sowthistle usually appears in newly established lawns. Its seeds spread by wind, rapidly taking over.<\/p>    <p class=\"wp-block-paragraph\"><strong>Life cycle:<\/strong> Summer annual, occasionally biennial&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>How to identify spiny sowthistle:<\/strong> Bright yellow flowerheads in summer. Leaf margins have soft, spiny teeth.<\/p>    <p class=\"wp-block-paragraph\"><strong>How to get rid of spiny sowthistle:<\/strong> Hand-pull small infestations (remove entire taproot). Post-emergent herbicides also work well.<\/p>    <h3 id=\"12-ragweed-ambrosia-artemisiifolia-\" class=\"wp-block-heading\">Ragweed (<em>Ambrosia artemisiifolia<\/em>)<\/h3>    <figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/wp.wikilawn.com\/wp-content\/uploads\/2023\/05\/Ragweed.jpg\" alt=\"closeup image of ragweed\"\/><figcaption class=\"wp-element-caption\">Ragweed. Photo Credit: <a href=\"https:\/\/www.flickr.com\/photos\/unitedsoybean\/9620849853\/in\/photolist-fEantB-cEPPAL-oJP9Wc-oQDUrY-UrwqYL-9GVHmA-Fi5MTT-4NY3bz-nnBPg-UrwqSU-XapK5Z-2h76tHJ-Y8Zd5y-2h8NHAA-cvJHjS-cvJGK3-xrQHu5-xuajPK-56J3-sd88kx-5wUVH8-rVxZJY-anBsgG-Fx4GoM-9XWGVD-F22wG5-8Aavfv-EzvXAc-FoFKhk-Fx4HTv-EzvVhp-s1wauL-b5yFKK-6UsQmr-fyozyX-xcEdb2-ahWfKh-2meUpVC-85eTub-vsMYxb-85qd2D-cp7hcJ-6UsPar-6UsTQB-g3K2gy-6UsRB8-aevT9z-g3JZTW-6UsVjg-5KLaHZ\" target=\"_blank\">United Soybean Board<\/a> \/ Flickr \/ <a href=\"https:\/\/creativecommons.org\/licenses\/by\/2.0\/deed.en\" target=\"_blank\" rel=\"noreferrer noopener\">CC BY 2.0<\/a><\/figcaption><\/figure>    <p class=\"wp-block-paragraph\">Oklahoma&#8217;s leading cause of hay fever, ragweed season typically runs from mid-August through the first frost in late October. Ragweed can also cause contact dermatitis.<\/p>    <p class=\"wp-block-paragraph\"><strong>Life cycle:<\/strong> Summer annual<\/p>    <p class=\"wp-block-paragraph\"><strong>How to identify ragweed:<\/strong> Hairy, branched stems reaching up to 6 feet. Fern-like&nbsp;compound leaves covered in fine hairs.<\/p>    <p class=\"wp-block-paragraph\"><strong>How to get rid of ragweed:<\/strong> Easy to control with pre-emergent or post-emergent herbicide applications.<\/p>    <h3 id=\"13-pigweed-amaranthus-retroflexus-\" class=\"wp-block-heading\">Pigweed (<em>Amaranthus retroflexus<\/em>)<\/h3>    <figure class=\"wp-block-image aligncenter size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"533\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2026\/08\/AdobeStock_171664856.jpg?wsr\" alt=\"A close-up of redroot pigweed (Amaranthus retroflexus) showing broad dark green leaves with reddish-tinged edges and spiky green flower spikes emerging from the stem axils, growing on a gravel and dirt background.\" class=\"wp-image-153789\" srcset=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2026\/08\/AdobeStock_171664856.jpg 800w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2026\/08\/AdobeStock_171664856-300x200.jpg 300w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2026\/08\/AdobeStock_171664856-656x437.jpg 656w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2026\/08\/AdobeStock_171664856-150x100.jpg 150w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2026\/08\/AdobeStock_171664856-768x512.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Redroot pigweed displays its broad leaves and characteristic spiky green flowers. Photo Credit: <a href=\"https:\/\/stock.adobe.com\/jo\/images\/red-root-or-pigweed-amaranth\/171664856\" target=\"_blank\" rel=\"noreferrer noopener\">Arousa<\/a> \/ Adobe Stock<\/figcaption><\/figure>    <p class=\"wp-block-paragraph\">Redroot pigweed is highly poisonous&nbsp;and can be herbicide-resistant.<\/p>    <p class=\"wp-block-paragraph\"><strong>Life cycle:<\/strong> Summer annual&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>How to identify pigweed:<\/strong> Egg-shaped leaves and dense, small hairs along the stem.<\/p>    <p class=\"wp-block-paragraph\"><strong>How to get rid of pigweed:<\/strong> Cultural practices work best: Regular mowing, dense turf, and hand-pulling young plants.<\/p>    <h3 id=\"14-wood-sorrel-oxalis-stricta-\" class=\"wp-block-heading\">Wood Sorrel (<em>Oxalis stricta<\/em>)<\/h3>    <figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2023\/06\/Wood-sorrel-1.jpg\" alt=\"closeup image of wood sorrel\"\/><figcaption class=\"wp-element-caption\">Wood sorrel. Photo Credit: <a target=\"_blank\" href=\"https:\/\/www.flickr.com\/photos\/74738817@N07\/42017677954\/in\/photolist-271XzMm-JsrHLk-27rALBa-271Xxfs-26JRGui-29yfDk5-29CuDSe-MuKL8o-Y1kQMP-29CuCcR-KWUesK-YUgC2L-N4MbZB-Kt9GEt-PFTmBs-K95hdq-KfPtwK-K9hVwt-KczEex-KphZgT-L93ZTB-nzV8jc-KvLFa7-L5BYQP-TX4agw-Ux5YiB-cwgAAC-HcuseW-EHSWiH-2mmaDT9-26nXXNZ-2juDG3B-FsDsfA-2mfSi6F-2nCj2GQ-CGkbrE-7v6SmQ-7v6Svf-7v34tB-7v6Tt3-7v6SYS-7v6SQw-2nPbN8f-HkTnmP-GqkH45-niqsdT-HdoJrm-HkTqeT-HfJ4WT-GroD8B\">Andreas Rockstein<\/a> \/ Flickr \/&nbsp;<a target=\"_blank\" href=\"https:\/\/creativecommons.org\/licenses\/by-sa\/2.0\/\">CC BY-SA 2.0<\/a><\/figcaption><\/figure>    <p class=\"wp-block-paragraph\">Frequently confused with clover, wood sorrel grows from mid-spring to late autumn.<\/p>    <p class=\"wp-block-paragraph\"><strong>Life cycle:<\/strong> Perennial&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>How to identify wood sorrel:<\/strong> Erect, pink-colored stems. 3 heart-shaped leaflets with hairy edges. Bright yellow flowers.<\/p>    <p class=\"wp-block-paragraph\"><strong>How to get rid of wood sorrel:<\/strong> Pre-emergent herbicide in early spring works best. Once established, its rhizomes and stolons&nbsp;are nearly impossible to fully remove.<\/p>    <h2 id=\"15-grassy-weeds\" class=\"wp-block-heading\">Grassy Weeds<\/h2>    <p class=\"wp-block-paragraph\">Grassy weeds have narrow, blade-like leaves and parallel veins, making identifying weeds in this category harder until they produce seed heads. Broadleaf herbicides won&#8217;t touch them. These weeds require pre-emergent herbicides for prevention or grass-selective post-emergent products.<\/p>    <h3 id=\"16-smooth-crabgrass-digitaria-ischaemum-\" class=\"wp-block-heading\">Smooth Crabgrass (<em>Digitaria ischaemum<\/em>)<\/h3>    <figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"800\" height=\"531\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2026\/08\/1280px-Smooth_crabgrass_18654293279-1.jpg?wsr\" alt=\"A close-up of smooth crabgrass blades held between a person's fingers, showing the narrow, elongated leaves with fine hairs along the edges and small water droplets on the surface, with a blurred mass of crabgrass visible in the background.\" class=\"wp-image-153926\" srcset=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2026\/08\/1280px-Smooth_crabgrass_18654293279-1.jpg 800w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2026\/08\/1280px-Smooth_crabgrass_18654293279-1-300x199.jpg 300w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2026\/08\/1280px-Smooth_crabgrass_18654293279-1-656x435.jpg 656w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2026\/08\/1280px-Smooth_crabgrass_18654293279-1-150x100.jpg 150w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2026\/08\/1280px-Smooth_crabgrass_18654293279-1-768x510.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Smooth crabgrass (Digitaria ischaemum) blade. Photo Credit: <a href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Smooth_crabgrass_(18654293279).jpg\" target=\"_blank\" rel=\"noreferrer noopener\">NY State IPM Program at Cornell University<\/a> \/ Wikimedia Commons \/ <a href=\"https:\/\/creativecommons.org\/licenses\/by\/2.0\" target=\"_blank\" rel=\"noreferrer noopener\">CC BY 2.0<\/a><\/figcaption><\/figure>    <p class=\"wp-block-paragraph\">Crabgrass germinates fast, typically once soil temperatures reach <a target=\"_blank\" href=\"https:\/\/turf.purdue.edu\/when-will-crabgrass-germinate\/\">57 to 64 degrees<\/a>, and thrives where lawns are stressed, especially near driveways and sidewalks where heat radiates from concrete.<\/p>    <p class=\"wp-block-paragraph\"><strong>Life cycle:<\/strong> Summer annual&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>How to identify smooth crabgrass:<\/strong> Light-green with noticeable nodes; leaves grow in a zig-zag pattern. Large crabgrass (<em>Digitaria sanguinalis<\/em>) has hairs on the leaf surface.<\/p>    <p class=\"wp-block-paragraph\"><strong>How to get rid of smooth crabgrass:<\/strong> Apply a <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/how-to-apply-crabgrass-preventer\/\">crabgrass preventer<\/a> before germination, then mow higher, fertilize properly, and mulch clippings to block sunlight. The plant hugs the ground, making hand-pulling difficult once established.<\/p>    <h3 id=\"17-johnsongrass-sorghum-halepense-\" class=\"wp-block-heading\">Johnsongrass (<em>Sorghum halepense<\/em>)<\/h3>    <figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2023\/06\/Johnsongrass.jpg\" alt=\"closeup image of Johnsongrass\"\/><figcaption class=\"wp-element-caption\">Johnsongrass. Photo Credit: <a href=\"https:\/\/www.flickr.com\/photos\/31031835@N08\/3236394310\/in\/photolist-5VZngU-5U4mcM-5U4kaR-FExSuH-KLHXB8-6GLYXC-2bqrzTN-349yGW-2159Ajy-29ErhGx-z22uhv-2aNfjjk-2dv9uWS-2bTkbXp-SuSXww-2bCXM3X-21QXbYc-28fyXPQ-2dv9sMm-24HXNjc-28ZzGk5-2avGUK3-yHLXXF-81aC6r-81aBuT-2eGZwL8-2945m7e-24MUw8f-2d3BgFD-21RLmMN-2295aMT-2K5C7p-FUB5YH-YW2s8H-FSLcxt-ci37Jo-RJScYU-oNy84e-295vTa6-24sRmcr-25a3Rre-SyUd7Y-dbhnRY-G9crmW-G97tFL-XD5J6X-xA6irJ-2b8JYuD-27HyoAj-dQMURQ\" target=\"_blank\">John Tann<\/a> \/ Flickr \/ <a href=\"https:\/\/creativecommons.org\/licenses\/by\/2.0\/deed.en\" target=\"_blank\" rel=\"noreferrer noopener\">CC BY 2.0<\/a><\/figcaption><\/figure>    <p class=\"wp-block-paragraph\">One of Oklahoma&#8217;s most aggressive weed grasses, it spreads through both seeds and dense underground rhizomes, making removal extremely difficult.<\/p>    <p class=\"wp-block-paragraph\"><strong>Life cycle:<\/strong> Perennial&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>How to identify johnsongrass:<\/strong> Smooth leaves with a center vein. Stems are pink to reddish near the base.<\/p>    <p class=\"wp-block-paragraph\"><strong>How to get rid of johnsongrass:<\/strong> Hand-pull small infestations. Larger ones require mowing combined with herbicide applications in early summer.<\/p>    <h3 id=\"18-annual-bluegrass-poa-annua-\" class=\"wp-block-heading\">Annual Bluegrass (<em>Poa annua<\/em>)<\/h3>    <figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2023\/05\/18873821918_c6cc94a2c7_o-1.jpg\" alt=\"close-up photo of annual bluegrass\"\/><figcaption class=\"wp-element-caption\">Annual bluegrass. Photo Credit:&nbsp;<a href=\"https:\/\/www.flickr.com\/photos\/99758165@N06\/18873821918\" target=\"_blank\">NY State IPM Program at Cornell University<\/a> \/ Flickr \/ <a href=\"https:\/\/creativecommons.org\/licenses\/by\/2.0\/deed.en\" target=\"_blank\" rel=\"noreferrer noopener\">CC BY 2.0<\/a><\/figcaption><\/figure>    <p class=\"wp-block-paragraph\">A winter weed that sneaks in during fall and thrives while your turf is slowing down. It produces abundant seeds spread by wind, animals, and water.<\/p>    <p class=\"wp-block-paragraph\"><strong>Life cycle:<\/strong> Winter annual&nbsp;&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>How to identify annual bluegrass:<\/strong> Yellow-green leaves with whitish flowers.<\/p>    <p class=\"wp-block-paragraph\"><strong>How to get rid of annual bluegrass:<\/strong> Remove small plants early. Seeds can lie dormant for years, so apply pre-emergent in fall. Regular fertilizing also helps prevent this weed.<\/p>    <h3 id=\"19-dallisgrass-paspalum-dilatatum-\" class=\"wp-block-heading\">Dallisgrass (<em>Paspalum dilatatum<\/em>)<\/h3>    <figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/wp.wikilawn.com\/wp-content\/uploads\/2023\/05\/25140451756_2a557dd4c7_c-3.jpg\" alt=\"Beautiful green colored dallisgrass\"\/><figcaption class=\"wp-element-caption\">Dallisgrass. Photo Credit: <a target=\"_blank\" href=\"https:\/\/www.flickr.com\/photos\/macleaygrassman\/24871167400\/in\/photostream\/\">Harry Rose<\/a> \/ Flickr \/&nbsp;<a target=\"_blank\" href=\"https:\/\/creativecommons.org\/licenses\/by\/2.0\/\">CC BY 2.0<\/a><\/figcaption><\/figure>    <p class=\"wp-block-paragraph\">One of the hardest grassy weeds to eliminate, it spreads through both seeds and short underground rhizomes.<\/p>    <p class=\"wp-block-paragraph\"><strong>Life cycle:<\/strong> Perennial&nbsp;<\/p>    <p class=\"wp-block-paragraph\"><strong>How to identify dallisgrass:<\/strong> Distinctive mid-rib. Seed heads form a raceme with hairy spikelets.<\/p>    <p class=\"wp-block-paragraph\"><strong>How to get rid of dallisgrass:<\/strong> Dig out young plants and apply pre-emergent herbicide. Spot-treat established plants through careful <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/how-to-spray-lawns-for-weeds-safely-and-effectively\/\">weed spraying<\/a> with post-emergent herbicide.<\/p>    <h2 id=\"20-faqs\" class=\"wp-block-heading\">FAQs<\/h2>    <div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-17860412597722753\"><strong class=\"schema-faq-question\">What Herbicides Can I Use on My Lawn?<\/strong> <p class=\"schema-faq-answer\"><p>Use post-emergent herbicides with 2,4-D, dicamba, or mecoprop for broadleaf weeds. For grassy weeds, use a pre-emergent for prevention or a grass-selective post-emergent like quinclorac for crabgrass.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-17860412597732458\"><strong class=\"schema-faq-question\">When Can I Apply Herbicides?<\/strong> <p class=\"schema-faq-answer\"><p>Apply <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/when-to-apply-pre-emergent-herbicide\/\">pre-emergent herbicides<\/a> in early spring, before soil temperature reaches 55 degrees, for summer weeds and in early to mid-September for winter weeds.<\/p><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-17860412597733352\"><strong class=\"schema-faq-question\">How Many Herbicide Applications Are Necessary?<\/strong> <p class=\"schema-faq-answer\"><p>Most post-emergent herbicides require 2 to 4 applications, with application intervals of 10 to 14 days between treatments, per <a href=\"https:\/\/extension.okstate.edu\/fact-sheets\/controlling-weeds-in-home-lawns\" target=\"_blank\">OSU Extension guidance<\/a>. Always follow the manufacturer&#8217;s instructions to avoid damaging your lawn.<\/p><\/p> <\/div> <\/div>    <h2 id=\"21-don%E2%80%99t-let-the-weeds-creep-you-out\" class=\"wp-block-heading\">Don\u2019t Let the Weeds Creep You Out<\/h2>    <p class=\"wp-block-paragraph\">You don\u2019t need to try identifying your weeds on your own. If you\u2019re unsure about the weeds infesting your lawn and how to get rid of them, we have an <a href=\"https:\/\/www.lawnstarter.com\/ok\">Oklahoma&nbsp;lawn care pro<\/a>&nbsp;near you. <\/p>    <p class=\"wp-block-paragraph\">We have trusted lawn care pros in&nbsp;<a href=\"https:\/\/www.lawnstarter.com\/tulsa-ok-lawn-care\">Tulsa<\/a>,&nbsp;<a href=\"https:\/\/www.lawnstarter.com\/oklahoma-city-ok-lawn-care\">Oklahoma City<\/a>,&nbsp;<a href=\"https:\/\/www.lawnstarter.com\/del-city-ok-lawn-care\">Del City<\/a>,&nbsp;<a href=\"https:\/\/www.lawnstarter.com\/norman-ok-lawn-care\">Norman<\/a>,&nbsp;<a href=\"https:\/\/www.lawnstarter.com\/edmond-ok-lawn-care\">Edmond<\/a>, and many more cities across the Sooner State.&nbsp;<\/p>    <p class=\"wp-block-paragraph\">Main Image Credit: White yarrow flowers. Photo Credit: <a href=\"https:\/\/pixabay.com\/de\/photos\/schafgarbe-wei%C3%9Fe-blumen-pflanze-5764748\/\" target=\"_blank\" rel=\"noreferrer noopener\">Pixabay<\/a><\/p><div class=\"ays-arp-under-posts-container ays-arp-elegant-layout related-posts\" id=\"ays-arp-under-posts-container-93064-6ab053d19783b\"  data-id=\"6ab053d19783b\" data-ratio=\"1\"><h2 class=\"ays-arp-under-posts-container-title\">Related Posts:<\/h2><input type=\"hidden\" name=\"ays-arp-id-6ab053d19783b\" value=\"93064\"><div class=\"ays-arp-under-posts\"><div class=\"ays-arp-under-post\"><div class=\"ays-arp-under-post-header\"><div class=\"ays-arp-under-post-img-row\"><a href=\"https:\/\/www.lawnstarter.com\/blog\/oklahoma\/tulsa-ok\/spring-lawn-care-tips-tulsa-ok\/\" class=\"ays-arp-under-post-link\"  ><img src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2026\/01\/LSTulsa-OK-copy-768x512.jpg?wsr\" alt=\"Tulsa, OK Spring lawn care\" class=\"ays-arp-under-post-img\"><img 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class=\"ays-arp-under-post-link\"  ><span class=\"ays-arp-under-post-read-more\">Read more<\/span><\/a><\/div><\/div><\/div><div class=\"ays-arp-under-post\"><div class=\"ays-arp-under-post-header\"><div class=\"ays-arp-under-post-img-row\"><a href=\"https:\/\/www.lawnstarter.com\/blog\/oklahoma\/native-plants-oklahoma-city-ok\/\" class=\"ays-arp-under-post-link\"  ><img src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/10\/14339596572_014de7ab4f_h-1-768x576.jpg?wsr\" alt=\"landscaped home in Warwick Heights, Oklahoma City OK\" class=\"ays-arp-under-post-img\"><img src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/10\/14339596572_014de7ab4f_h-1-768x576.jpg?wsr\" alt=\"landscaped home in Warwick Heights, Oklahoma City OK\" class=\"ays-arp-under-post-img ays-arp-under-post-img-mobile\"><\/a><\/div><\/div><div class=\"ays-arp-under-post-content\"><div class=\"ays-arp-under-post-title-row\"><div class=\"ays-arp-under-post-title\"><a href=\"https:\/\/www.lawnstarter.com\/blog\/oklahoma\/native-plants-oklahoma-city-ok\/\" class=\"ays-arp-under-post-link\"  >Native Plants for Easy Gardening in Oklahoma...<\/a><\/div><\/div><div class=\"ays-arp-under-post-read-more-row\"><a href=\"https:\/\/www.lawnstarter.com\/blog\/oklahoma\/native-plants-oklahoma-city-ok\/\" class=\"ays-arp-under-post-link\"  ><span class=\"ays-arp-under-post-read-more\">Read more<\/span><\/a><\/div><\/div><\/div><\/div><style type=\"text\/css\">\n            #ays-arp-under-posts-container-93064-6ab053d19783b {\n                width: 100%;\n                word-break: break-word;\n            }\n\n            #ays-arp-under-posts-container-93064-6ab053d19783b .ays-arp-under-post {\n                width: calc(20% - 10px);\n                overflow: hidden;\n                padding: 10px;\n                border: none;\n            }\n\n            #ays-arp-under-posts-container-93064-6ab053d19783b .ays-arp-under-post-img-row 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A proud mom of two rescued cats, she also has a special love for animals.\",\"url\":\"https:\\\/\\\/www.lawnstarter.com\\\/blog\\\/author\\\/teresa-joaquim\\\/\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.lawnstarter.com\\\/blog\\\/oklahoma\\\/common-weeds-oklahoma\\\/#faq-question-17860412597722753\",\"position\":1,\"url\":\"https:\\\/\\\/www.lawnstarter.com\\\/blog\\\/oklahoma\\\/common-weeds-oklahoma\\\/#faq-question-17860412597722753\",\"name\":\"What Herbicides Can I Use on My Lawn?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>Use post-emergent herbicides with 2,4-D, dicamba, or mecoprop for broadleaf weeds. 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A proud mom of two rescued cats, she also has a special love for animals.","url":"https:\/\/www.lawnstarter.com\/blog\/author\/teresa-joaquim\/"},{"@type":"Question","@id":"https:\/\/www.lawnstarter.com\/blog\/oklahoma\/common-weeds-oklahoma\/#faq-question-17860412597722753","position":1,"url":"https:\/\/www.lawnstarter.com\/blog\/oklahoma\/common-weeds-oklahoma\/#faq-question-17860412597722753","name":"What Herbicides Can I Use on My Lawn?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"<p>Use post-emergent herbicides with 2,4-D, dicamba, or mecoprop for broadleaf weeds. For grassy weeds, use a pre-emergent for prevention or a grass-selective post-emergent like quinclorac for crabgrass.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.lawnstarter.com\/blog\/oklahoma\/common-weeds-oklahoma\/#faq-question-17860412597732458","position":2,"url":"https:\/\/www.lawnstarter.com\/blog\/oklahoma\/common-weeds-oklahoma\/#faq-question-17860412597732458","name":"When Can I Apply Herbicides?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"<p>Apply <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/when-to-apply-pre-emergent-herbicide\/\">pre-emergent herbicides<\/a> in early spring, before soil temperature reaches 55 degrees, for summer weeds and in early to mid-September for winter weeds.<\/p>","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.lawnstarter.com\/blog\/oklahoma\/common-weeds-oklahoma\/#faq-question-17860412597733352","position":3,"url":"https:\/\/www.lawnstarter.com\/blog\/oklahoma\/common-weeds-oklahoma\/#faq-question-17860412597733352","name":"How Many Herbicide Applications Are Necessary?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"<p>Most post-emergent herbicides require 2 to 4 applications, with application intervals of 10 to 14 days between treatments, per <a href=\"https:\/\/extension.okstate.edu\/fact-sheets\/controlling-weeds-in-home-lawns\" target=\"_blank\">OSU Extension guidance<\/a>. 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