{"id":44646,"date":"2022-03-13T13:25:16","date_gmt":"2022-03-13T16:25:16","guid":{"rendered":"https:\/\/www.lawnstarter.com\/blog\/?p=44646"},"modified":"2025-03-24T23:21:48","modified_gmt":"2025-03-25T02:21:48","slug":"how-to-choose-lawn-fertilizer","status":"publish","type":"post","link":"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/how-to-choose-lawn-fertilizer\/","title":{"rendered":"How to Choose the Right Lawn Fertilizer"},"content":{"rendered":"<p>They say you are what you eat, and it\u2019s the same with your lawn. To grow healthy, vibrant turfgrass year-round, you must know how to choose the right lawn fertilizer for regular maintenance and solving specific problems.<\/p>    <p>Several factors must be considered, but the most important ones are your soil test, your grass type and specific needs for the season, and how much time and money you can invest in fertilizing. This article covers all that and more, including expert tips that offer a pro\u2019s view on fertilizing home lawns.<\/p>   <div class=\"wp-block-ub-table-of-contents-block ub_table-of-contents\" id=\"ub_table-of-contents-5d8e4e2c-95fb-4c36-9ca8-ca5b6a850a6f\" 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\">In this article, we cover:<\/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\/lawn-care-2\/how-to-choose-lawn-fertilizer\/#0-why-lawns-need-fertilizer\" style=\"\">Why Lawns Need Fertilizer<\/a><\/li><li style=\"\"><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/how-to-choose-lawn-fertilizer\/#1-understanding-fertilizer-numbers-and-nutrients\" style=\"\">Understanding Fertilizer Numbers and Nutrients<\/a><\/li><li style=\"\"><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/how-to-choose-lawn-fertilizer\/#4-determine-your-lawn%E2%80%99s-nutrition-needs-and-goals\" style=\"\">Determine Your Lawn\u2019s Nutrition Needs and Goals<\/a><\/li><li style=\"\"><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/how-to-choose-lawn-fertilizer\/#9-determine-the-type-of-fertilizer\" style=\"\">Determine the Type of Fertilizer<\/a><\/li><li style=\"\"><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/how-to-choose-lawn-fertilizer\/#18-seasonal-considerations\" style=\"\">Seasonal Considerations<\/a><\/li><li style=\"\"><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/how-to-choose-lawn-fertilizer\/#23-additional-enhancements-for-your-lawn\" style=\"\">Additional Enhancements for Your Lawn<\/a><\/li><li style=\"\"><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/how-to-choose-lawn-fertilizer\/#28-other-things-to-consider\" style=\"\">Other Things to Consider<\/a><\/li><li style=\"\"><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/how-to-choose-lawn-fertilizer\/#33-faq\" style=\"\">FAQ<\/a><\/li><\/ul> \t\t\t<\/div> \t\t<\/div><\/div>   <h2 class=\"wp-block-heading\" id=\"0-why-lawns-need-fertilizer\">Why Lawns Need Fertilizer<\/h2>    <p>Truth be told, lawns can survive without fertilization, but they are rarely able to grow into the emerald-green, thick, carpet-like turf we all love. When grass has access to all the nutrients it needs, it has a more uniform texture, denser growth, and a nice bounce when you walk on it.&nbsp;<\/p>    <p>Well-fed turf benefits more than its appearance. It grows stronger and healthier, can more effectively handle pests and diseases, crowd out weeds, withstand drought and extreme temperatures, and recover faster from traffic and play.<\/p>    <p>According to Penn State University, \u201cFertilization does more to improve poor-quality turfgrass or to maintain good-quality turfgrass than any other management practice.\u201d Knowing <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/how-to-fertilize-lawn\/\">how to fertilize your lawn<\/a> and what fertilizer to choose is a valuable skill for any homeowner who loves a beautiful, thick lawn.<\/p>    <p><strong>Note:<\/strong> If you don\u2019t have time to compare and choose fertilizers, you can <a href=\"https:\/\/www.lawnstarter.com\/landscaping\/lawn-treatment\">hire a pro to fertilize the lawn<\/a>.<\/p>    <p><strong>See Related: <\/strong><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/how-to-prevent-weed-growth-in-lawn\/\">How to Prevent Weeds from Growing in Your Lawn<\/a><\/p>    <h2 class=\"wp-block-heading\" id=\"1-understanding-fertilizer-numbers-and-nutrients\">Understanding Fertilizer Numbers and Nutrients<\/h2>    <figure class=\"wp-block-image aligncenter size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"508\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/06\/Fertilizer-NPK.jpg\" alt=\"Fertilizers with nutrient elements pointed out\" class=\"wp-image-116456\" srcset=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/06\/Fertilizer-NPK.jpg 800w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/06\/Fertilizer-NPK-300x191.jpg 300w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/06\/Fertilizer-NPK-150x95.jpg 150w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/06\/Fertilizer-NPK-768x488.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Photo Credit: <a href=\"https:\/\/stock.adobe.com\/images\/fertilizer-in-soil-the-concept-of-plant-care-is-the-need-for-feeding-with-various-fertilizers-text-n-p-k-ca-mg-s-mn-cl-b-fe-zn\/468884909\" target=\"_blank\" rel=\"noreferrer noopener\">ooddysmile<\/a> \/&nbsp;Adobe Stock Free&nbsp;\/&nbsp;<a href=\"https:\/\/stock.adobe.com\/jo\/license-terms\" target=\"_blank\" rel=\"noreferrer noopener\">License<\/a><\/figcaption><\/figure>    <p>Turfgrass requires 16 nutrients for optimal health. All are important and can cause problems when lacking or in excess, but six are needed in higher amounts in the soil and are considered <em>primary nutrients <\/em>or <em>macronutrients<\/em>: oxygen, carbon, hydrogen, nitrogen, phosphorus, and potassium.&nbsp;<\/p>    <p>Plants absorb oxygen, carbon, and hydrogen from the air and water, so the three primary macronutrients you need to ensure grass has enough in the soil are: nitrogen, phosphorus and potassium.<\/p>    <p>Each plays an essential role in plant growth:<\/p>    <ul class=\"wp-block-list\"> <li><strong>Nitrogen<\/strong> supports the growth of healthy, green grass blades.&nbsp;<\/li>    <li><strong>Phosphorus<\/strong> gives turf deep, strong roots.&nbsp;<\/li>    <li><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/what-does-potassium-do-for-lawns\/\">Potassium improves grass\u2019s resistance<\/a> to stress and helps it handle pests, diseases, drought, and extreme temperatures.<\/li> <\/ul>    <p>Among them, nitrogen stands out. Grass plants consume it from the soil daily in high amounts, so you must replenish the reserve periodically during the growing season. It\u2019s why nitrogen is most often the largest percentage in the NPK numbers.<\/p>    <h3 class=\"wp-block-heading\" id=\"2-what-are-npk-numbers\">What are NPK numbers?<\/h3>    <p>The NPK numbers are the three large numbers separated by dashes on every commercial fertilizer (e.g., 10-10-10).&nbsp; They are also known as <em>fertilizer rate<\/em> or <em>guaranteed analyses.<\/em>&nbsp;<\/p>    <p>The <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/fertilizer-numbers-what-they-mean\/\">fertilizer numbers<\/a> tell, in percentages, how much of the three essential macronutrients (nitrogen, phosphorus, and potassium) is in the bag and allow you to calculate the weight in pounds for a specific product.<\/p>    <p>Here\u2019s an example:<\/p>    <figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td><strong>NPK numbers on the bag<\/strong><\/td><td>20-4-8<\/td><\/tr><tr><td><strong>Nutrient percentage<\/strong><\/td><td>20% nitrogen4% phosphate (a soluble form of phosphorus)<br>8% potash (a soluble form of potassium)<\/td><\/tr><tr><td><strong>Nutrient by weight in a 5-pound bag<\/strong><\/td><td>1 pound of nitrogen (20% * 5 pounds)<br>0.2 pounds of phosphate (4% * 5 pounds)<br>0.4 pounds of potash (8% * 5 pounds)<\/td><\/tr><\/tbody><\/table><\/figure>    <p>Most organic fertilizers and some conventional products also contain <em>secondary macronutrients<\/em> (magnesium, calcium, sulfur) and <em>micronutrients<\/em> (boron, chlorine, copper, iron, manganese, molybdenum, nickel, zinc). They are mentioned in the guaranteed analyses on the back of the package.<\/p>    <h3 class=\"wp-block-heading\" id=\"3-how-to-choose-a-fertilizer-using-the-npk-numbers\">How to Choose a Fertilizer Using the NPK Numbers<\/h3>    <p><strong>Choose a fertilizer that includes only the nutrients you need<\/strong>. If you cannot apply phosphorus because local regulations restrict phosphorus fertilizers, choose a fertilizer with zero as the second NPK number (e.g., 10-0-4).<\/p>    <p><strong>Select a mix close to the soil test&#8217;s recommendations.<\/strong> For example, if your soil test recommends adding 4 pounds of N, zero pounds of P\u2082O\u2085 (P2O5 &#8211; phosphate), and 2 pounds of K\u2082O (K2O &#8211; potash) per 1,000 square feet, you need a product without phosphate and twice as much nitrogen as potash.&nbsp;<\/p>    <p>In this case, the first NPK number must be twice as high as the third one, and the second, zero, so you\u2019re searching for a fertilizer with an NPK ratio like 20-0-10.<\/p>    <h2 class=\"wp-block-heading\" id=\"4-determine-your-lawn%E2%80%99s-nutrition-needs-and-goals\">Determine Your Lawn\u2019s Nutrition Needs and Goals<\/h2>    <figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"800\" height=\"534\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2023\/03\/Hand-Held-Granular-Fertilizer.jpg\" alt=\"a person fertilizing lawn with a spreader\" class=\"wp-image-87446\" srcset=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2023\/03\/Hand-Held-Granular-Fertilizer.jpg 800w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2023\/03\/Hand-Held-Granular-Fertilizer-300x200.jpg 300w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2023\/03\/Hand-Held-Granular-Fertilizer-646x431.jpg 646w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2023\/03\/Hand-Held-Granular-Fertilizer-150x100.jpg 150w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2023\/03\/Hand-Held-Granular-Fertilizer-768x513.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Photo Credit: <a href=\"https:\/\/www.shutterstock.com\/image-photo\/manual-fertilizing-lawn-back-yard-spring-106526951\" target=\"_blank\" rel=\"noreferrer noopener\">Shutterstock<\/a><\/figcaption><\/figure>    <p>If you determine what you want from your lawn (e.g., greener color, thicker turf, and fewer disease problems) and what it needs to achieve that goal, you\u2019ll be halfway to finding the <a href=\"https:\/\/www.lawnstarter.com\/blog\/reviews\/best-grass-fertilizers\/\">best fertilizer<\/a> for your grass.<\/p>    <h3 class=\"wp-block-heading\" id=\"5-consider-your-lawn%E2%80%99s-goals\">Consider Your Lawn\u2019s Goals<\/h3>    <p>A healthy, strong lawn that requires less mowing and fewer pesticides and herbicides is better fertilized with more natural and less aggressive products such as:<\/p>    <ul class=\"wp-block-list\"> <li>Organic fertilizers.<\/li>    <li>Grass clippings: Leaving grass clippings on the lawn as mulch can reduce nitrogen applications by up to 25%.<\/li>    <li>A slow-release, low nitrogen fertilizer.<\/li>    <li>Compost: It improves the soil\u2019s texture and quality and helps the grass better absorb nutrients.<\/li> <\/ul>    <p>If you want to maintain a pristine, dark green, thick, golf-course-like lawn, you&#8217;ll need more precise and stronger treatments than organic options usually provide. These include higher-nitrogen fertilizers and occasional liquid applications to maintain the perfect color. You\u2019ll also need to fertilize more often.<\/p>    <h3 class=\"wp-block-heading\" id=\"6-consider-your-grass-type\">Consider Your Grass Type<\/h3>    <p>Not all turfgrass types react the same to fertilizers. For example, <a href=\"https:\/\/www.lawnstarter.com\/blog\/grass-guides\/tall-fescue-lawn-maintenance-guide\/\">tall fescue<\/a> is more susceptible to <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/fighting-brown-patch-other-summer-lawn-fungus-diseases\/\">brown patch disease<\/a>, which is worsened by excess nitrogen in the spring. To reduce the risk of infestation and limit damage, apply a winter fertilizer late in the fall and skip the spring treatment.<\/p>    <p><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/centipedegrass-lawn-maintenance-guide\/\">Centipedegrass<\/a> is more sensitive to high levels of phosphorus in the soil than other turfgrasses. Excess phosphorus limits its ability to absorb iron and can lead to <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/how-to-treat-iron-chlorosis-in-lawns\/\">chlorosis<\/a> more quickly in a centipede lawn. If you grow centipede, avoid adding phosphorus unless the soil is deficient.<\/p>    <p>Talk to the local Extension Office expert about your grass type&#8217;s needs to ensure you choose the best lawn fertilizer.<\/p>    <p><strong>See Related:&nbsp;<\/strong><\/p>    <ul class=\"wp-block-list\"> <li><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/when-to-fertilize-centipedegrass\/\">How and When to Fertilize Centipedegrass<\/a><\/li>    <li><a href=\"https:\/\/www.lawnstarter.com\/blog\/reviews\/best-fertilizers-st-augustinegrass\/\">Best Fertilizers for St. Augustinegrass [Reviews]<\/a><\/li>    <li><a href=\"https:\/\/www.lawnstarter.com\/blog\/reviews\/best-bermudagrass-fertilizers\/\">Best Fertilizers for Bermudagrass [Reviews]<\/a><\/li> <\/ul>    <h3 class=\"wp-block-heading\" id=\"7-consider-your-lawn%E2%80%99s-condition\">Consider Your Lawn\u2019s Condition<\/h3>    <p>Slow-growing seedlings with reduced tillering and a red to purple blade color indicate that your lawn doesn\u2019t have access to enough phosphorus. Consider a fertilizer that provides phosphorus (if the state\u2019s law allows it), but do a soil test first.&nbsp;<\/p>    <p>Potassium deficiency is not as visible since it manifests as a reduced tolerance to stress. A lawn lacking in potassium shows subtle signs such as:<\/p>    <ul class=\"wp-block-list\"> <li>Wilts faster in drought and heat<\/li>    <li>Exits winter dormancy with more damage<\/li>    <li>Is more extensively affected by diseases and pests&nbsp;<\/li> <\/ul>    <p>Healthy lawn? Focus on nitrogen.<strong> <\/strong>If your turf is beautiful, deep green, and looks healthy and thriving, the right lawn fertilizer is high in nitrogen to support top growth and lower in phosphate and potash.<\/p>    <p><strong>See Related: <\/strong><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/signs-to-fertilize-lawn\/\">5 Tell-Tale Signs Your Lawn Needs Fertilizer<\/a><\/p>    <h3 class=\"wp-block-heading\" id=\"8-conduct-a-soil-test\">Conduct a Soil Test<\/h3>    <figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/06\/48616944803_c9b08f9d54_c-1.jpg\" alt=\"Hand holding Ph level testing kit for soil\" class=\"wp-image-115442\" srcset=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/06\/48616944803_c9b08f9d54_c-1.jpg 800w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/06\/48616944803_c9b08f9d54_c-1-300x225.jpg 300w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/06\/48616944803_c9b08f9d54_c-1-150x113.jpg 150w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/06\/48616944803_c9b08f9d54_c-1-768x576.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Photo Credit: <a href=\"https:\/\/www.flickr.com\/photos\/backyardboss\/48616944803\" target=\"_blank\" rel=\"noreferrer noopener\">Backyard Boss<\/a> \/ Flickr \/ <a href=\"https:\/\/creativecommons.org\/licenses\/by\/2.0\/\" target=\"_blank\" rel=\"noreferrer noopener\">CC BY 2.0<\/a><\/figcaption><\/figure>    <p>Why guess what your lawn needs when you can practically get a recipe for the treatment? <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/how-to-prepare-soil-sample\/\">Take a soil sample<\/a> (it\u2019s so easy!), send it to the local Extension Office, and you&#8217;ll get back the soil test results with expert recommendations on the right turf fertilizer and soil amendments to buy.<\/p>    <p>You can also <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/how-to-use-soil-test-kit\/\">use a test kit<\/a> to perform the soil test at home, but I think it\u2019s better to get a professional\u2019s opinion on your lawn&#8217;s soil quality at least once every two to three years. You\u2019ll get more accurate results and detailed recommendations on how to improve the soil and your turf.<\/p>    <p><strong>See Related:<\/strong><\/p>    <ul class=\"wp-block-list\"> <li><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/ph-soil-test-lawn-grass\/\">How to Test the Soil pH of Your Lawn<\/a><\/li>    <li><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/why-soil-testing-is-important-for-lawn\/\">Reasons Why Soil Testing Is Important for the Lawn<\/a><\/li> <\/ul>    <h2 class=\"wp-block-heading\" id=\"9-determine-the-type-of-fertilizer\">Determine the Type of Fertilizer<\/h2>    <figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"400\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2025\/03\/organic-vs-synthetic-fertilizer-1-1.jpg\" alt=\"illustration depicting organic fertilizer and synthetic fertilizer\" class=\"wp-image-129071\" style=\"object-fit:cover\" srcset=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2025\/03\/organic-vs-synthetic-fertilizer-1-1.jpg 800w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2025\/03\/organic-vs-synthetic-fertilizer-1-1-300x150.jpg 300w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2025\/03\/organic-vs-synthetic-fertilizer-1-1-656x328.jpg 656w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2025\/03\/organic-vs-synthetic-fertilizer-1-1-150x75.jpg 150w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2025\/03\/organic-vs-synthetic-fertilizer-1-1-768x384.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Photo Credit: Juan Rodriguez<\/figcaption><\/figure>    <p>What type of fertilizer is best for your lawn? It depends on your goals and your lawn&#8217;s needs. Let\u2019s see how you can choose among the most common types available on the market.&nbsp;<\/p>    <h3 class=\"wp-block-heading\" id=\"10-organic-vs-synthetic\">Organic vs. Synthetic<\/h3>    <p><strong>Organic lawn fertilizers<\/strong> are made of natural materials, and are gentler with the plants and the environment, while synthetic fertilizers act faster and allow more control over the treatment.<\/p>    <p>Michelle Zdybowicz, president and co-founder of Jeden Bioscience, a company specializing in organic fertilizers, biochar, and natural soil amendments, says <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/guide-organic-lawn-care\/\">organic fertilizers<\/a>\u2019 top benefit is that they build healthier soil.&nbsp;<\/p>    <p>\u201cThey not only provide essential nutrients but also add organic matter, fostering beneficial soil microbes that improve water retention and nutrient availability,\u201d says Zdybowicz.&nbsp;<\/p>    <p><strong>Conventional fertilizers<\/strong> for grass, on the other hand, are made in the lab with handpicked inorganic chemicals. They are more concentrated, provide faster results at a lower cost, and are often the better choice to solve a specific nutrient deficiency. But they can deplete the soil over time and can harm the environment.&nbsp;<\/p>    <p>\u201cIn wet weather, they can leach away quickly, which is something to watch for. In dry conditions, their effectiveness may drop without additional watering,\u201d says Zdybowicz.<\/p>    <p><strong>See Related:&nbsp;<\/strong><\/p>    <ul class=\"wp-block-list\"> <li><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/difference-between-organic-synthetic-fertilizer\/\">Organic vs. Synthetic Fertilizer<\/a><\/li> <\/ul>    <h3 class=\"wp-block-heading\" id=\"11-complete-vs-incomplete\">Complete vs. Incomplete<\/h3>    <figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"533\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/07\/nitrogen-fertilizer.jpeg\" alt=\"closeup of nitrogen fertilizer\" class=\"wp-image-116630\" srcset=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/07\/nitrogen-fertilizer.jpeg 800w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/07\/nitrogen-fertilizer-300x200.jpeg 300w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/07\/nitrogen-fertilizer-150x100.jpeg 150w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/07\/nitrogen-fertilizer-768x512.jpeg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Photo Credit: <a href=\"https:\/\/stock.adobe.com\/images\/chemical-fertilizer-close-up-npk-fertilizer-for-plants\/286075773\" target=\"_blank\" rel=\"noreferrer noopener\">Sensay<\/a>&nbsp;\/ Adobe Stock Free&nbsp;\/&nbsp;<a href=\"https:\/\/stock.adobe.com\/jo\/license-terms\" target=\"_blank\" rel=\"noreferrer noopener\">License<\/a><\/figcaption><\/figure>    <p>A <strong>complete fertilizer<\/strong> is the most common choice for newly installed lawns that require all the essential macronutrients. Complete fertilizers can have:<\/p>    <ul class=\"wp-block-list\"> <li>Equal amounts of nitrogen, potash, and phosphate (balanced fertilizers).<\/li>    <li>Some nutrients in higher amounts than others (unbalanced fertilizers).<\/li> <\/ul>    <p>Unbalanced fertilizers cover a wide range of NPK ratios, so you\u2019ll often find the ideal fertilizer for your lawn\u2019s needs and soil test recommendations in this category.<\/p>    <p><strong>Incomplete fertilizers<\/strong> for grass include only one or two nutrients and allow you to make targeted treatments. Common examples are:<\/p>    <ul class=\"wp-block-list\"> <li><a href=\"https:\/\/www.amazon.com\/GRO-Fine-Phosphorus-Free-Lawn-Fertilizer\/dp\/B07STJLMFD?&amp;linkCode=ll1&amp;tag=lawnstarterla-20&amp;linkId=0a196a25ff1f115cda62fd9c0ca88e86&amp;language=en_US&amp;ref_=as_li_ss_tl\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Phosphate-free fertilizers<\/a> (e.g., 32-0-4), which are readily available in states where phosphate fertilizers are banned to reduce nutrient pollution.<\/li>    <li><a href=\"https:\/\/www.amazon.com\/0-0-26-Foliar-Phosphite-Soluble-Fertilizer\/dp\/B07V4GL4X1?th=1&amp;linkCode=ll1&amp;tag=lawnstarterla-20&amp;linkId=83cfd7b3ef02460330120b2de925e350&amp;language=en_US&amp;ref_=as_li_ss_tl\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Potash fertilizers<\/a> (e.g., 0-0-26), helpful in treating a severe potash deficiency.<\/li> <\/ul>    <h3 class=\"wp-block-heading\" id=\"12-fast-release-vs-slow-release\">Fast-Release vs. Slow-Release<\/h3>    <p><strong>Fast-release fertilizers<\/strong> are granular or liquid and contain water-soluble nutrients that quickly disperse into the soil. Green-up is visible within a week after the application, and the effect lasts up to four weeks. However, there is a higher risk of fertilizer burn, so follow the application instructions carefully.<\/p>    <p>A quick-release fertilizer is a good choice for:<\/p>    <ul class=\"wp-block-list\"> <li>Boosting turf appearance quickly when you\u2019re planning a party or need to sell the house.<\/li>    <li>Helping a struggling lawn to recover.<\/li>    <li>Feeding the grass in late fall.<\/li> <\/ul>    <p>If time is not of the essence and you\u2019re more focused on a healthy lawn with steady growth, use <strong>slow-release nitrogen fertilizers<\/strong>. These fertilizers are typically in granular form and work more slowly. They also last longer (some even up to six months) and require less frequent applications.&nbsp;<\/p>    <p>Slow-release fertilizers are a good choice for:<\/p>    <ul class=\"wp-block-list\"> <li>Regular maintenance of established lawns during the growing season.<\/li>    <li>Providing steady grass growth and better disease resistance with fewer rapid growth spurts that often lead to weak, thin blades.&nbsp;&nbsp;&nbsp;<\/li> <\/ul>    <p><strong>Pro Tip:<\/strong> According to Oregon State University Extension, leaving grass clippings on the lawn after mowing can extend the effect of fertilizers by two to four weeks.<\/p>    <p><strong>See Related:&nbsp;<\/strong><\/p>    <ul class=\"wp-block-list\"> <li><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/slow-release-vs-quick-release-fertilizer\/\">Slow-Release vs. Quick-Release Fertilizer<\/a><\/li>    <li><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/what-is-fertilizer-burn\/\">What is Fertilizer Burn?<\/a><\/li> <\/ul>    <h3 class=\"wp-block-heading\" id=\"13-specialty-fertilizers\">Specialty Fertilizers<\/h3>    <figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"533\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/07\/rsz_shutterstock_1177125406-1.jpg\" alt=\"Lawn fertilizer is spread by hand with a T-shaped tool that spreads fertilizer from both sides of an arrow-shaped element\" class=\"wp-image-117632\" srcset=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/07\/rsz_shutterstock_1177125406-1.jpg 800w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/07\/rsz_shutterstock_1177125406-1-300x200.jpg 300w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/07\/rsz_shutterstock_1177125406-1-150x100.jpg 150w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/07\/rsz_shutterstock_1177125406-1-768x512.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Photo Credit: <a href=\"https:\/\/www.shutterstock.com\/image-photo\/lawn-fertilizer-being-spread-by-hand-1177125406\" target=\"_blank\" rel=\"noreferrer noopener\">Shutterstock<\/a><\/figcaption><\/figure>    <p>Just as BBQ sauce was developed to keep barbecued meat tender and juicy and bring out its best taste and flavor, specialty fertilizers were created to optimize turf growth in specific situations. Well-known examples are starter fertilizers, weed and feed, and winter fertilizers.<\/p>    <h4 class=\"wp-block-heading\" id=\"14-starter-fertilizers\">Starter Fertilizers<\/h4>    <p>Starter fertilizers are mixes of nitrogen, phosphate, and potash meant for feeding newly seeded lawns or freshly installed sod. They help young grass build strong roots, healthy leaves and stems, and a resilient immune system.&nbsp;<\/p>    <p>According to Penn State University, common starter fertilizer NPK ratios are 10-10-10, 16-8-8, 20-10-10, 10-6-4, and 15-10-10. <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/9-faqs-about-applying-starter-fertilizer-to-your-lawn\/\">Starter fertilizers<\/a> are available in slow- and fast-release options.&nbsp;<\/p>    <h4 class=\"wp-block-heading\" id=\"15-weed-and-feed\">Weed and Feed<\/h4>    <p>Weed and feed products combine lawn nutrients with a pre- or post-emergent herbicide (or both) in the same package. This sounds amazing, as they can feed the grass while keeping the weeds under control. However, in the long term or if used incorrectly, <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/is-weed-and-feed-bad-for-lawn\/\">weed and feed can harm the lawn<\/a>.&nbsp;<\/p>    <p>For example, herbicides are usually applied as spot treatments in infested areas. But, with a <a href=\"https:\/\/www.lawnstarter.com\/blog\/reviews\/best-weed-and-feed\/\">weed and feed product<\/a>, the mix must be spread all over the lawn, increasing the risk of the herbicide harming the grass and polluting the environment.<\/p>    <p><strong>Note: <\/strong>If you need to overseed the lawn, look for a weed and feed that can be used on newly seeded lawns such as <a href=\"https:\/\/www.amazon.com\/Scotts-Builder-Triple-Action-Seeding\/dp\/B08KH1RYW3?th=1&amp;linkCode=ll1&amp;tag=lawnstarterla-20&amp;linkId=40bca712755ef1c8808bbef08908b9a3&amp;language=en_US&amp;ref_=as_li_ss_tl\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Scott Turf Builder Triple-Action<\/a> with mesotrione. Regular weed and feed can prevent seeds from germinating.&nbsp;<\/p>    <p><strong>See Related:<\/strong><\/p>    <ul class=\"wp-block-list\"> <li><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/how-to-weed-and-feed-lawn\/\">How to Weed and Feed Your Lawn<\/a><\/li>    <li><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/how-long-after-weed-and-feed-can-you-plant-seed\/\">How Long After Weed and Feed Can You Plant Seed?<\/a><\/li> <\/ul>    <h4 class=\"wp-block-heading\" id=\"16-winter-fertilizers\">Winter Fertilizers<\/h4>    <p>Think of winter fertilizers as the last opportunity to treat soil deficiencies that might compromise lawn health during the winter. Applied in mid- to late fall, winter fertilizers can help:<\/p>    <ul class=\"wp-block-list\"> <li>Increase nutrient reserves in the grass roots and crowns.<\/li>    <li>Improve grass plants&#8217; resilience to <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/what-is-winter-desiccation\/\">winter desiccation<\/a>, <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/what-is-snow-mold\/\">snow mold<\/a>, and other types of winter damage.<\/li>    <li>Support faster green up next spring.<\/li> <\/ul>    <p>What winter fertilizers have in common is a <strong>higher potassium content<\/strong> than regular fertilizers. Products meant for cool-season grasses also include nitrogen, but they are usually low in nitrogen to prevent forced green up.<\/p>    <p><strong>Note:<\/strong> It is not advised to apply nitrogen to warm-season lawns after mid-September. If the soil is deficient, apply a potassium fertilizer (e.g., 0-0-20). If you want to prolong the green color, apply iron.<\/p>    <p><strong>See Related:&nbsp;<\/strong><\/p>    <ul class=\"wp-block-list\"> <li><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/how-to-keep-grass-green-in-winter\/\">How to Keep Grass Green in Winter<\/a><\/li>    <li><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/how-to-winterize-southern-lawns\/\">How to Winterize Your Southern Lawn<\/a><\/li> <\/ul>    <h4 class=\"wp-block-heading\" id=\"17-granular-vs-liquid-fertilizers\">Granular vs. Liquid Fertilizers<\/h4>    <figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"567\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/07\/Spreader-on-lawn.jpg\" alt=\"Spreader on lawn\" class=\"wp-image-116752\" srcset=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/07\/Spreader-on-lawn.jpg 800w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/07\/Spreader-on-lawn-300x213.jpg 300w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/07\/Spreader-on-lawn-150x106.jpg 150w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/07\/Spreader-on-lawn-768x544.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Photo Credit: <a href=\"https:\/\/stock.adobe.com\/images\/fertilizing-and-seeding-residential-backyard-lawn-with-manual-grass-fertilizer-spreader\/353699151?asset_id=353699151\" target=\"_blank\" rel=\"noreferrer noopener\">The Toidi<\/a> \/ Adobe Stock<\/figcaption><\/figure>    <p>When choosing between <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/liquid-vs-granular-fertilizer\/\">granular and liquid fertilizers<\/a>, consider your lawn&#8217;s requirements and how fast you need or want to see results.&nbsp;<\/p>    <p>Applied as dry pellets, <strong>granular fertilizers<\/strong> can last for up to five months, making them a good option for:<\/p>    <ul class=\"wp-block-list\"> <li>Large lawns where repeated applications are a hassle.<\/li>    <li>Steady, long-term lawn feeding of established grass.&nbsp;<\/li>    <li>Sandy soils, which are less able to hold nutrients for longer periods.<\/li> <\/ul>    <p>Zdybowicz says granular fertilizers are \u201cideal for early-season applications,\u201d while liquid fertilizers are \u201cperfect for addressing urgent lawn needs during active growth periods.\u201d<\/p>    <p>Some <strong>liquid fertilizers<\/strong> are applied to the soil, and others can be sprayed on the grass blades as a foliar treatment. The fast action makes liquid fertilizers a good option for:<\/p>    <ul class=\"wp-block-list\"> <li>A fast boost of nutrients to get a new lawn going or revive a struggling lawn.&nbsp;<\/li>    <li>Late-fall applications, when there\u2019s not enough time for granular fertilizers to be absorbed.<\/li>    <li>Spoon-feeding the lawn (applying low rates of 0.1 to 0.25 pounds of nitrogen per 1,000 square feet every one or two weeks).<\/li> <\/ul>    <p>Liquid fertilizers are often available in containers that can be connected directly to the garden hose for a smooth application. Granular fertilizers, on the other hand, require a spreader to ensure a uniform application.<\/p>    <p><strong>Pro Tip<\/strong>: While most liquid fertilizers for grass are synthetic, you can also choose an organic one such as <a href=\"https:\/\/www.amazon.com\/Lawn-Kelp-Fertilizer-Protecting-Greening\/dp\/B09Z7BFDSY?th=1&amp;linkCode=ll1&amp;tag=lawnstarterla-20&amp;linkId=18ffab14d47bb87a9c7f2c380e7cf739&amp;language=en_US&amp;ref_=as_li_ss_tl\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">liquid kelp<\/a> and <a href=\"https:\/\/www.amazon.com\/Fertilome-10611-Emulsion-Fertilizer-5-1-1\/dp\/B0055SAEM6?th=1&amp;linkCode=ll1&amp;tag=lawnstarterla-20&amp;linkId=7beffdc2f8d163138502c7830247554e&amp;language=en_US&amp;ref_=as_li_ss_tl\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">liquid fish emulsion<\/a>.<\/p>    <p><strong>See Related:<\/strong><\/p>    <ul class=\"wp-block-list\"> <li><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/how-to-apply-liquid-fertilizer-to-lawn\/\">How to Apply Liquid Fertilizer to Your Lawn<\/a><\/li>    <li><a href=\"https:\/\/www.lawnstarter.com\/blog\/reviews\/best-fertilizer-spreaders\/\">Best Fertilizer Spreaders [Reviews]<\/a><\/li> <\/ul>    <h2 class=\"wp-block-heading\" id=\"18-seasonal-considerations\">Seasonal Considerations<\/h2>    <figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/01\/liquid-fertilizer-2.jpg\" alt=\"man using hose connected to a bottle of liquid fertilizer to spray on a lawn\" class=\"wp-image-108081\" style=\"width:800px;height:533px\" width=\"800\" height=\"533\" srcset=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/01\/liquid-fertilizer-2.jpg 800w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/01\/liquid-fertilizer-2-300x200.jpg 300w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/01\/liquid-fertilizer-2-646x430.jpg 646w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/01\/liquid-fertilizer-2-150x100.jpg 150w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2024\/01\/liquid-fertilizer-2-768x512.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Photo Credit: <a href=\"https:\/\/www.shutterstock.com\/image-photo\/man-fertilizing-residential-backyard-lawn-liquid-1716677731\" target=\"_blank\" rel=\"noreferrer noopener\">Shutterstock<\/a><\/figcaption><\/figure>    <p>Some municipalities have fertilizer blackout periods when applying fertilizers with nitrogen and phosphorus is prohibited. Most fertilizer blackouts correlate with:<\/p>    <ul class=\"wp-block-list\"> <li>The rainy season (e.g., June through September in Florida)<\/li>    <li>The time the soil is frozen (e.g., November through March in Mid-Atlantic and northern states).&nbsp;<\/li> <\/ul>    <p>That\u2019s when the risk of runoff and fertilizers leaching into the waterways is higher.<\/p>    <p>Turfgrass also has different nutrient needs across the year, as it goes from dormancy to active growth and then dormancy again. Here\u2019s what to consider when choosing the fertilizer every season.<\/p>    <h3 class=\"wp-block-heading\" id=\"19-spring\">Spring<\/h3>    <p>At the start of a new growing season, the goal is to allow your lawn to exit dormancy in its natural rhythm. Focus on providing the nutrients it needs to grow deep roots and develop stress resilience.&nbsp;<\/p>    <p>To prevent fertilizer burn, use a slow-release fertilizer that gradually disperses nitrogen over a few weeks. Look for fertilizers with an NPK ratio of 3-1-2 or 4-1-2 (e.g., a 16-4-8 fertilizer). Fertilize only once the grass is actively growing (around the time of the first mow).<\/p>    <p><strong>Note: <\/strong>The NPK ratio tells the ratio between the NPK numbers. You obtain it by dividing the NPK numbers by the smallest one.&nbsp;<\/p>    <h3 class=\"wp-block-heading\" id=\"20-summer\">Summer<\/h3>    <p>Warm-season grasses peak in growth during the summer, so the goal is to provide a fertilizer high in nitrogen that can support this accelerated growth. Look for fertilizers with at least 20% nitrogen, like the <a href=\"https:\/\/www.amazon.com\/Almighty-Lawn-Fertilizer-Slow-Release-GreenTRX\/dp\/B0CK5WBN65?th=1&amp;linkCode=ll1&amp;tag=lawnstarterla-20&amp;linkId=25776c4fbed7f8404bbb0fad55217ace&amp;language=en_US&amp;ref_=as_li_ss_tl\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">20-0-10 Almighty Lawn Fertilizer<\/a>.&nbsp;<\/p>    <p>Potassium and phosphorus are less important now, unless the soil is deficient. Potassium and phosphorus deficiencies are more common on sandy soils, which are less able to retain nutrients.<\/p>    <p><strong>Note:<\/strong> During summer, cool-season grasses enter dormancy and typically don\u2019t require fertilization. However, if you continue to irrigate and keep the lawn going, use a fertilizer low in nitrogen and high in potassium (e.g., 10-0-20) to improve its resistance to heat and drought.<\/p>    <h3 class=\"wp-block-heading\" id=\"21-fall\">Fall<\/h3>    <p>Fall fertilization focuses on lawn recovery after summer stress and preparations for the winter season.<\/p>    <p><strong>From late summer to early fall, <\/strong>use a high-nitrogen fertilizer with at least 50% slow-release nitrogen and some potassium to help the grass recover from summer stress. A good NPK ratio is 3-0-1 or close to it.&nbsp;<\/p>    <p>Warm-season grasses should not be fertilized with nitrogen after mid-September since it can delay dormancy.&nbsp;<\/p>    <p><strong>For mid- to late-fall applications<\/strong>, use a high-potassium fertilizer with fast-release nitrogen for cool-season grasses. This improves grass hardiness and ensures the nitrogen is absorbed before the grass enters dormancy. Good NPK ratios for mid- to late fall are 1-0-1 or 2-0-1 or close to it (e.g., 21-0-20 or 19-2-13).<\/p>    <p>While they are still actively growing, warm-season grasses can benefit from an iron application to prolong the green color. If the soil is deficient, apply a <a href=\"https:\/\/www.amazon.com\/Protection-Lawn-Concentrated-Simple-Solutions\/dp\/B01921NUMC?th=1&amp;linkCode=ll1&amp;tag=lawnstarterla-20&amp;linkId=edfbec8970622995d235f1ec2f34d79e&amp;language=en_US&amp;ref_=as_li_ss_tl\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">potassium fertilizer<\/a> to boost the grass&#8217;s cold-hardiness.&nbsp;<\/p>    <p><strong>See Related<\/strong>: <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/when-to-fertilize-lawn\/\">When to Fertilize Your Lawn<\/a><\/p>    <h3 class=\"wp-block-heading\" id=\"22-winter\">Winter<\/h3>    <p>Don\u2019t apply fertilizer during winter when the grass is dormant.<\/p>    <h2 class=\"wp-block-heading\" id=\"23-additional-enhancements-for-your-lawn\">Additional Enhancements for Your Lawn<\/h2>    <figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"524\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2025\/03\/minerals-and-fertilizer.jpeg\" alt=\"Role of nutrients mineral in plant and soil life\" class=\"wp-image-129740\" srcset=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2025\/03\/minerals-and-fertilizer.jpeg 800w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2025\/03\/minerals-and-fertilizer-300x197.jpeg 300w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2025\/03\/minerals-and-fertilizer-656x430.jpeg 656w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2025\/03\/minerals-and-fertilizer-150x98.jpeg 150w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2025\/03\/minerals-and-fertilizer-768x503.jpeg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Photo Credit: <a href=\"https:\/\/stock.adobe.com\/images\/role-of-nutrients-mineral-in-corn-plant-and-soil-life-with-digital-mineral-nutrients-icon\/376922969\" target=\"_blank\" rel=\"noreferrer noopener\">Miha Creative<\/a> \/&nbsp;Adobe Stock Free&nbsp;\/&nbsp;<a href=\"https:\/\/stock.adobe.com\/jo\/license-terms\" target=\"_blank\" rel=\"noreferrer noopener\">License<\/a><\/figcaption><\/figure>    <p>Even though they\u2019re needed in smaller amounts, secondary nutrients and micronutrients are important for grass to function and grow properly.&nbsp;<\/p>    <h3 class=\"wp-block-heading\" id=\"24-magnesium\">Magnesium<\/h3>    <p>Magnesium is essential for chlorophyll production and improves grass&#8217;s ability to perform photosynthesis, produce energy, and grow. According to the Louisiana State University Extension, you\u2019re more likely to deal with a magnesium deficiency if grass grows on sandy soil, acidic soil, or a soil with excess calcium, potassium, or sodium.&nbsp;<\/p>    <p>The deficiency can be treated with a <a href=\"https:\/\/www.amazon.com\/0-0-21-5-Potassium-Magnesium-Sulfate-Fertilizer\/dp\/B0DLW18QQD?th=1&amp;linkCode=ll1&amp;tag=lawnstarterla-20&amp;linkId=0ee1d7e46aad69a87ccabb0a7a9fc763&amp;language=en_US&amp;ref_=as_li_ss_tl\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">magnesium fertilizer<\/a> and by adjusting the soil pH as necessary.<\/p>    <p><strong>Pro Tip:<\/strong> Experts at the University of Florida say foliar applications have better results than spreading granular fertilizer on the soil.<\/p>    <p><strong>See Related: <\/strong><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/signs-acidic-soil-in-lawn\/\">Signs of Acidic Soil in Your Lawn (Low pH)<\/a><\/p>    <h3 class=\"wp-block-heading\" id=\"25-sulfur\">Sulfur<\/h3>    <p>Sulfur improves nitrogen, phosphorus, and potassium uptake and supports general plant growth. It\u2019s also the main <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/types-soil-amendments\/\">type of soil amendment<\/a> to lower soil pH on lawns with alkaline soil. If you notice stunted growth on your lawn and younger blades starting to yellow, you might be dealing with a sulfur deficiency.&nbsp;<\/p>    <p>However, these symptoms are common to other nutrient deficiencies, so before buying a <a href=\"https:\/\/www.amazon.com\/Lancaster-Agriculture-Products-Sulfer-20lb\/dp\/B0CWSJ3JLB?th=1&amp;linkCode=ll1&amp;tag=lawnstarterla-20&amp;linkId=1aab40f72d5b19da36e8527a4f0e9aee&amp;language=en_US&amp;ref_=as_li_ss_tl\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">sulfur fertilizer<\/a>, take a soil test. Sulfur deficiencies can appear in sandy soils and soils poor in organic matter.<\/p>    <p><strong>See Related:<\/strong>&nbsp;<\/p>    <ul class=\"wp-block-list\"> <li><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/signs-alkaline-soil-in-lawn\/\">Signs of Alkaline Soil in Your Lawn (High pH)<\/a><\/li> <\/ul>    <h3 class=\"wp-block-heading\" id=\"26-calcium\">Calcium<\/h3>    <p>Calcium is essential for leaf and root development and supports the soil&#8217;s microbial life. A <a href=\"https:\/\/www.amazon.com\/Calcium-15-5-0-0-Fertilizer-25-POUNDS\/dp\/B0716H9XDJ?th=1&amp;linkCode=ll1&amp;tag=lawnstarterla-20&amp;linkId=4df3dd8ddebce3f4a541b1a5fbd88f8a&amp;language=en_US&amp;ref_=as_li_ss_tl\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">fertilizer with calcium<\/a> is something to consider if you notice grass blades curling or developing purple edges and dry tips. Calcium deficiencies also lead to stunted growth and are more common in sandy soils.<\/p>    <h3 class=\"wp-block-heading\" id=\"27-iron\">Iron<\/h3>    <p>Iron gives the grass a deep, vibrant green, supports efficient photosynthesis, and helps the turf maintain its color for longer in late fall and early winter. You can use a <a href=\"https:\/\/www.homedepot.com\/p\/Ironite-3-lb-1-000-sq-ft-Dry-Lawn-and-Garden-Fertilizer-1-0-0-100544882\/317814844\" target=\"_blank\" rel=\"noreferrer noopener\">fertilizer with iron<\/a> to treat iron deficiency or to improve the lawn&#8217;s color late in the season.<\/p>    <p>Zdybowicz says where iron is missing, there might also be a manganese deficiency, \u201cespecially in alkaline soils.\u201d<\/p>    <p>\u201cBoth are vital for chlorophyll production. If one is low, the other might be too, so it&#8217;s smart to treat them together,\u201d says Zdybowicz, recommending homeowners to consider \u201cchelated iron products that also include manganese.\u201d<\/p>    <p><strong>See Related:&nbsp;<\/strong><\/p>    <ul class=\"wp-block-list\"> <li><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/why-add-iron-fertilizer-to-lawn\/\">Why Add Iron Fertilizer to Your Lawn? (5 Benefits)<\/a><\/li>    <li><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/how-to-treat-iron-chlorosis-in-lawns\/\">How to Treat Iron Chlorosis in Lawns<\/a><\/li> <\/ul>    <h2 class=\"wp-block-heading\" id=\"28-other-things-to-consider\">Other Things to Consider<\/h2>    <figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"502\" src=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2025\/02\/backpack-sprayer.jpeg\" alt=\"Backpack sprayer on a Lawn\" class=\"wp-image-128697\" srcset=\"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2025\/02\/backpack-sprayer.jpeg 800w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2025\/02\/backpack-sprayer-300x188.jpeg 300w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2025\/02\/backpack-sprayer-656x412.jpeg 656w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2025\/02\/backpack-sprayer-150x94.jpeg 150w, https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2025\/02\/backpack-sprayer-768x482.jpeg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Photo Credit: <a href=\"https:\/\/stock.adobe.com\/images\/garden-use-atomizing-backpack-sprayer-on-a-lawn\/484522438\" target=\"_blank\" rel=\"noreferrer noopener\">Tomasz Zajda<\/a> \/ Adobe Stock Free \/ <a href=\"https:\/\/stock.adobe.com\/license-terms\" target=\"_blank\" rel=\"noreferrer noopener\">License<\/a><\/figcaption><\/figure>    <p>Have you covered everything? Not just yet. Before you decide on the right fertilizer for your turfgrass, consider how much you are willing to spend on fertilizers, the time and effort required to apply the product, and what you can do to keep the environment free from nutrient pollution.<\/p>    <h3 class=\"wp-block-heading\" id=\"29-lawn-size\">Lawn Size<\/h3>    <p>If you have a small, cozy lawn under 1\/4 acre, you might be able to apply a liquid fertilizer every two to four weeks, but that\u2019s simply not practical on a large lawn. Granular slow-release fertilizers are a better choice for large surfaces because they need to be applied only once every couple of months.<\/p>    <p>Packaging also matters. Fertilizer bags weighing 5 to 10 lbs are more suitable for treating a small lawn. They minimize waste and are easier to handle and store. If you have a large lawn, bulk options weighing 20 to 50 pounds often provide better value for the money.<\/p>    <h3 class=\"wp-block-heading\" id=\"30-budget\">Budget<\/h3>    <p>To keep the lawn care budget low while also feeding your grass the right fertilizer for healthy growth, do this:<\/p>    <ul class=\"wp-block-list\"> <li>Do a soil test to ensure you feed your lawn only the nutrients it needs and avoid paying for nutrients the soil already has in adequate amounts.<\/li>    <li>Choose granular fertilizers for regular maintenance and apply liquid fertilizers only if you need a quick fix.<\/li>    <li>Buy in bulk.<\/li>    <li><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/reasons-to-use-grass-clippings-as-mulch\/\">Recycle the grass clippings as mulch<\/a>.<\/li>    <li>To go organic, <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/composting-101-how-to-start-your-first-compost-pile\/\">learn to compost<\/a> garden debris and kitchen scraps and buy organic fertilizer manufactured locally from local raw materials.<\/li> <\/ul>    <p><strong>See Related: <\/strong><a href=\"https:\/\/www.lawnstarter.com\/blog\/landscaping\/how-to-use-compost\/\">How to Use Compost in Your Yard<\/a><\/p>    <h3 class=\"wp-block-heading\" id=\"31-environmental-impact\">Environmental Impact<\/h3>    <p>Excess phosphorus and nitrogen leaching into waterways from overfertilized lawns pollutes streams, rivers, and lakes and harms aquatic life. This long-term damage is hard to correct but easy to prevent by exercising moderation when choosing and using lawn fertilizers.&nbsp;<\/p>    <p>Here\u2019s what you can do to protect the environment while still enjoying a beautiful lawn:<\/p>    <ul class=\"wp-block-list\"> <li>Choose slow-release fertilizers over fast-release whenever possible.&nbsp;<\/li>    <li>Select a non-phosphorus fertilizer if you don\u2019t have a soil test that shows a phosphorus deficiency.<\/li>    <li>Avoid spreading more nitrogen than recommended for your type of turf.<\/li>    <li>Replace synthetic fertilizers with organic alternatives when possible.<\/li> <\/ul>    <p><strong>See Related:<\/strong><\/p>    <ul class=\"wp-block-list\"> <li><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/can-you-over-fertilize-lawn\/\">Can You Over-Fertilize Your Lawn?<\/a><\/li>    <li><a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/guide-eco-friendly-lawn-care\/\">A Guide to Eco-Friendly Lawn Care<\/a><\/li> <\/ul>    <h3 class=\"wp-block-heading\" id=\"32-local-regulations\">Local Regulations<\/h3>    <p>Before selecting a fertilizer for your lawn, check the local regulations. At least 11 states across the country ban or restrict the use of phosphorus fertilizers on lawns, including: Maine, Maryland, Michigan, Minnesota, New Jersey, New York, Washington, and Wisconsin.&nbsp;<\/p>    <p>Most allow some exceptions such as:<\/p>    <ul class=\"wp-block-list\"> <li>The use of phosphate fertilizer to establish new lawns by seed or sod.<\/li>    <li>Treating a phosphorus deficiency if proven by a soil test.<\/li>    <li>Applications of phosphate in an organic fertilizer.<\/li> <\/ul>    <p>Seasonal restrictions are more widespread. They limit phosphorus and nitrogen applications in the winter, when the soil is covered in snow or frozen, and during the rainy season, when there is a high risk of runoff.&nbsp;<\/p>    <p><strong>See Related:<\/strong> <a href=\"https:\/\/www.lawnstarter.com\/blog\/lawn-care-2\/cities-limiting-lawn-chemicals\/\">Cities Limiting Use of Lawn Fertilizers and Pesticides<\/a><\/p>    <h2 class=\"wp-block-heading\" id=\"33-faq\">FAQ<\/h2>    <div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1742547554673\"><strong class=\"schema-faq-question\">What Kind of Fertilizer Helps Your Lawn Green Up Quickly?<\/strong> <p class=\"schema-faq-answer\">If you need a quick green up, apply a small amount of liquid fertilizer with fast-release nitrogen. It can be synthetic or an organic option, such as liquid kelp or liquid fish emulsion. Spreading liquid iron can also help the lawn grow faster and greener by helping the grass produce more chlorophyll.\u00a0<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1742547560242\"><strong class=\"schema-faq-question\">How Much Does Lawn Fertilization Cost?<\/strong> <p class=\"schema-faq-answer\">The <a href=\"https:\/\/www.lawnstarter.com\/blog\/cost\/lawn-fertilization-price\/\">cost of fertilizing<\/a> the average lawn varies <strong>between $103 and $343<\/strong>, depending on the type of fertilizer used.\u00a0<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1742547566762\"><strong class=\"schema-faq-question\">Can I Use the Same Fertilizer on My Lawn and Plants?<\/strong> <p class=\"schema-faq-answer\">The 10-10-10 fertilizer available for lawns is considered an all-purpose fertilizer and can also be used to fertilize flowering plants and shrubs. However, you typically get better results when you use a fertilizer specifically formulated for the types of plants you grow (flowering plant, shrubs, veggies, etc.)<\/p> <\/div> <\/div>    <h2 class=\"wp-block-heading\" id=\"34-leave-the-choice-to-professionals\">Leave the Choice to Professionals<\/h2>    <p>Local lawn care professionals know exactly what your grass type needs every season. With LawnStarter, you can <a href=\"https:\/\/www.lawnstarter.com\/lawn-care\">find a trusted lawn care company<\/a> nearby and have your turf perfectly cared for to achieve the thick, vibrant look you love.<\/p>    <p>LawnStarter pros can also help you save time by taking on any lawn care task you would rather set aside, from <a href=\"https:\/\/www.lawnstarter.com\/landscaping\/leaf-removal\">leaf removal<\/a> and <a href=\"https:\/\/www.lawnstarter.com\/lawn-care\">lawn mowing<\/a> to <a href=\"https:\/\/www.lawnstarter.com\/landscaping\/lawn-aeration\">aeration<\/a> and <a href=\"https:\/\/www.lawnstarter.com\/lawn-care\">dethatching<\/a>.<\/p>   <div class=\"wp-block-ub-content-toggle wp-block-ub-content-toggle-block\" id=\"ub-content-toggle-block-89c679a9-1889-4fbc-b09f-985eeca0b2fc\" 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-0-89c679a9-1889-4fbc-b09f-985eeca0b2fc\" tabindex=\"0\"> \t\t\t<p class=\"wp-block-ub-content-toggle-accordion-title ub-content-toggle-title-89c679a9-1889-4fbc-b09f-985eeca0b2fc\" style=\"color: #000000; \"><strong>Sources:<\/strong><\/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-0-89c679a9-1889-4fbc-b09f-985eeca0b2fc\">  <ul class=\"wp-block-list\"> <li>Clemson Extension Home &amp; Garden Information Center. <a href=\"https:\/\/hgic.clemson.edu\/factsheet\/centipedegrass-maintenance-calendar\/\" target=\"_blank\" rel=\"noreferrer noopener\">Centipedegrass Yearly Maintenance Program<\/a><\/li>    <li>Louisiana State University. <a href=\"https:\/\/www.lsuagcenter.com\/profiles\/aiverson\/articles\/page1563204504302\" target=\"_blank\" rel=\"noreferrer noopener\">Louisiana Home Lawn Series: Calcium &amp; Magnesium<\/a><\/li>    <li>Penn State University Extension. <a href=\"https:\/\/extension.psu.edu\/lawn-establishment\" target=\"_blank\" rel=\"noreferrer noopener\">Lawn Establishment<\/a><\/li>    <li>Penn State University Extension. <a href=\"https:\/\/extension.psu.edu\/turfgrass-fertilization-a-basic-guide-for-professional-turfgrass-managers\" target=\"_blank\" rel=\"noreferrer noopener\">Turfgrass Fertilization: A Basic Guide for Professional Turfgrass Managers<\/a><\/li>    <li>University of Florida Extension. <a href=\"https:\/\/edis.ifas.ufl.edu\/publication\/EP554\" target=\"_blank\" rel=\"noreferrer noopener\">Calcium for Florida Turfgrasses<\/a><\/li>    <li>University of Florida Extension. <a href=\"https:\/\/edis.ifas.ufl.edu\/publication\/EP555\" target=\"_blank\" rel=\"noreferrer noopener\">Magnesium for Florida Turfgrasses<\/a><\/li>    <li>University of Missouri. <a href=\"https:\/\/ipm.missouri.edu\/meg\/2010\/4\/Reducing-the-Risk-of-Turfgrass-Diseases\/\" target=\"_blank\" rel=\"noreferrer noopener\">Reducing the Risk of Turfgrass Diseases\u00a0<\/a><\/li>    <li>Zdybowicz, Michelle of <a href=\"https:\/\/jeden.bio\/\" target=\"_blank\" rel=\"noreferrer noopener\">Jeden Bioscience<\/a>. Personal Interview.<\/li> <\/ul>  <\/div> \t\t<\/div> <\/div>   <p>*&nbsp;<em>LawnStarter participates in the Amazon Services LLC Associates Program, an affiliate advertising program. LawnStarter may earn revenue from products promoted in this article.<\/em>&nbsp;<\/p>    <p>Main Photo Credit: <a href=\"https:\/\/www.shutterstock.com\/image-photo\/feeding-lawn-granular-fertilizer-perfect-green-1793770075\" target=\"_blank\" rel=\"noreferrer noopener\">Shutterstock<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>To choose the right lawn fertilizer, start with a soil test, consider the season and the turf type and health, then factor in lawn size and budget. <\/p>\n","protected":false},"author":140,"featured_media":44651,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[28],"tags":[9],"class_list":["post-44646","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lawn-care-2","tag-lawn-care"],"acf":[],"featured_image_src":"https:\/\/www.lawnstarter.com\/blog\/wp-content\/uploads\/2022\/03\/rsz_shutterstock_1793770075.jpg?wsr","author_info":{"display_name":"Sinziana Spiridon","author_link":"https:\/\/www.lawnstarter.com\/blog\/author\/sinziana-spiridon\/"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Choose the Right Lawn Fertilizer<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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