Milorganite Fertilizer: https://amzn.to/3aABX54Weed Killer: https://amzn.to/3tskVPjWinterization Fertilizer: https://amzn.to/3pVJEclIronite: https://amzn.to/...Yes, Milorganite is safe for St. Augustine grass. While other fertilizers can cause a nitrogen overload that actually pulls moisture out of the grass, killing it, Milorganite doesn’t pose this risk. This is because Milorganite feeds soil microbes, which slowly release nitrogen and other nutrients as your grass needs it.34:0:4 NPK fertilizer; Kills henbit and clover in lawns; Has 5% iron that makes grass greener; Pennington Ultragreen Southern Weed and Feed’s biggest selling point is that it’s both a quick-release and slow-release fertilizer.The fast-acting nitrogen will turn your St. Augustine turf into a lush green and dense lawn …Just follow these steps: Choose the best time to plant. Calculate square footage and spacing. Prep the site. Plant the grass plugs. 1. Choose the best time to plant. The best time to plant St. Augustine plugs is in the late spring or early summer. By this time in the southeast, temperatures are well above 80℉.34:0:4 NPK fertilizer; Kills henbit and clover in lawns; Has 5% iron that makes grass greener; Pennington Ultragreen Southern Weed and Feed’s biggest selling point is that it’s both a quick-release and slow-release fertilizer.The fast-acting nitrogen will turn your St. Augustine turf into a lush green and dense lawn …Generally, St Augustine grass can be fertilized between 2-6 times per year, all depending on your location. Due to the climatic range and geographical locations of where St. Augustine grass grows fall fertilizer applications differ depending on location. In northern areas where St Augustine will go dormant, no fertilizer is needed.Feb 8, 2021 ... Benefits of Thickening and Fertilizing a St. Augustine Lawn · Preventing allergies and discomfort. Unfortunately allergy weeds are top pollen ... Best Fertilizer for New St. Augustine Lawns. New Lawn Starter Box. $49.95. Add to cart. Perfect for newly planted sod, grass plugs or seed. Establishes a root system. Delivers carbon, amino acids and microbes for soil health. Liquid fertilizer box with three bottles of fertilizer that covers 5,000 sq. ft. Features Catalyst Technology. Fast results are desired but not guaranteed. We have used Scotts Turf Builder WinterGuard Fall Lawn Fertilizer on our St. Augustine grass and have seen a noticeable improvement in the thickness and health of our lawn. The fertilizer is easy to apply with a Scotts spreader and covers up to 4,000 sq. ft. per 10 lb. bag.Sep 5, 2022 ... Next time you fertilize, try using some Milorganite. Milorganite is a very safe, organic, non-burning fertilizer that will really green your ...6 Best Lawn Fertilizers for St. Augustinegrass of 2024 [Reviews] by Michelle Selzer | Updated: November 29, 2023. Product Reviews. St. Augustinegrass is …Read page 1 of our customer reviews for more information on the LESCO 50 lbs. 14,000 sq. ft. 26-2-11 Fertilizer with ... Centipede, Contractor's Mix, Dense Shade, Fescue, Rye, St. Augustine (Floratam), Sun and Shade, Tall Fescue, Zoysia. Features. Nitrogen Fertilizer, No Additional Features. Quickly Greens. Kills Chickweed, Kills Clovers, Kills ...Hi-Yield Weed and Feed 15-0-10. Hi-Yield Weed & Feed combines granular Trimec weed killer with a 15-0-10 fertilizer. While not the ideal 15-0-15 blend, the weed & feed targets over 200 common broadleaf weeds while providing plenty of nutrients for your zoysia lawn. Apply 3.6lbs per 1,000 sq. ft. and water the lawn thoroughly within 1 to 2 …Could this be the SECRET to having a Green Lawn? In this video we put Jerry Baker’s All Season Green Up Lawn Tonic to the TEST! Jerry Baker was an author, ga...4. Lesco Professional St Augustine Weed & Feed Fertilizer. If you are looking into growing a lush lawn amid hot temperatures, shades, or even drought, then Lesco fertilizer is what you need. The 50 lb bag has a ratio of 17-0-7 and is 30% poly-coated with sulfur and urea, meaning it will not burn your grass.This item: SUNNILAND Corporation ST Augustine Weed&FEED5M. $4164 ($0.13/Ounce) +. The Andersons Barricade Professional-Grade Granular Pre-Emergent Weed Control - Covers up to 5,800 sq ft (18 lb) $4288 ($0.15/Ounce) Total price: Add both to Cart. These items are shipped from and sold by different sellers.How to Use. APPLYING PGF COMPLETE 16-4-8. - PGF Complete 16-4-8 Fertilizer is great for all seasons and can be applied in spring, summer, and fall. Apply every 6-8 weeks during the growing season. - For summer applications on cool-season grasses, apply at 50-75% of the normal rate. When applying on centipede lawns, …$23.77. Buy on Amazon. At a Glance. OUR TOP CHOICE. Andersons PGF Complete . Simple Lawns’ Lawn Food Natural Liquid Fertilizer. LawnStar 16-4-8 NPK Fertilizer. Scotts Turf Builder Starter …When To Fertilize St. Augustine Grass. St. Augustine Grass Fertilizer Schedule; How do you revive St. Augustine grass? Understanding Fertilizer Ratio N-P-K. Nitrogen; …September. Before six weeks of the first frosting weather, you should fertilize your lawn. Use a fertilizer that contains high potassium and low nitrogen. And apply a …St. Augustine grass should be fertilized 2–4 times per year during the growing season. Treat St. Augustine with nitrogen fertilizer regularly, beginning 3 …The best fertilizer for St Augustine grass is any fertilizer that has one pound of nitrogen for every 1,000 square feet of sod. Fertilizing every two months is ideal unless you apply slow release fertilizer that can be spread every 10 weeks. Here's How to Figure Out which Bag of Fertilizer to Choose.Fertilizer Tips. Healthy St. Augustine lawns like regular fertilizer applications. A common fertilizer schedule sets the first feeding at the start of the growing season with a "Weed and Feed" fertilizer and then spaces the remaining doses with a temperature-appropriate lawn food to avoid over-fertilization.Sometimes the lawn …Summary. The best time to put down pre emergent products on your lawn is when the lawn’s soil is somewhere between 50°F and 60°F, and dry. It also helps if there is a bit of rain in the forecast, if not, you need to follow up with a garden hose or sprinkler system. The bottom line is that the pre emergent must soak deep enough into the lawn ... For this reason, St. Augustine needs more frequent and higher rates of nitrogen compared to the other nutrients. Good growth and color often is achieved with a 70/30 ratio of soluble nitrogen and slow-release fertilizer sources. A ratio of 3-1-2 (N-P-K) is a good overall fertilizer mix for the St Augustine lawn. Sep 5, 2022 ... Next time you fertilize, try using some Milorganite. Milorganite is a very safe, organic, non-burning fertilizer that will really green your ...Plant fertilizers and household plant foods are used to improve plant growth. Poisoning can occur if someone swallows these products. Plant fertilizers and household plant foods ar...Bermudagrass and St. Augustine are prone to thatch. Centipedegrass can also promote it if overfertilized. 8. How to Apply Fertilizer Like a Pro in the Sunshine State. To avoid root burn and ensure healthy growth, you must spread the fertilizer uniformly across the lawn. The easiest way is with a broadcast spreader. St. Augustine Lawn Care Application 1 Early Spring. ferti•lome ® St. Augustine Weed & Feed should be applied early in the spring when the grass begins to turn green & the weeds are actively growing. Apply and water in. If the yard is dry, water the day prior to application. This is a slow release 15-0-4 fertilizer with 1% added Iron for a ... Feb 18, 2024 ... The best time to fertilize St. Augustine grass is in the early spring, just as the grass begins to green up, and again in the late spring or ...Which fertilizer solution to use depends on where you live, what type of grass you're growing, and any lawn problems that might be present. Here's what we recommend. ... Luckily, Scotts® Turf Builder® Southern Triple Action can tackle all of those challenges in one fell swoop for St. Augustine, centipede, zoysia, and carpetgrass lawns.Only fertilize St. Augustine grass in winter if you live in a region where St. Augustine does not go dormant during the winter months. Do not apply fertilizer to dormant (brown) St. Augustine. If your grass remains green through winter, use 16-4-8 fertilizer. A single application that delivers 0.5 pounds of …The best fertilizers for St. Augustine grass are ‒ Pennington 100536576 UltraGreen Lawn Fertilizer, Simple Lawn Solutions Maximum Green Liquid Fertilizer, Pennington UltraGreen Starter Lawn Fertilizer, 14 LBS, and Scotts Southern Turf Builder Lawn Food, among others. From selecting the right …Apr 30, 2022 ... ... fertilizer as, say, St. Augustine grass likes. So, with centipedegrass we'd fertilize it once, maybe up to two times per year. I like April ...Hi-Yield Weed and Feed 15-0-10. Hi-Yield Weed & Feed combines granular Trimec weed killer with a 15-0-10 fertilizer. While not the ideal 15-0-15 blend, the weed & feed targets over 200 common broadleaf weeds while providing plenty of nutrients for your zoysia lawn. Apply 3.6lbs per 1,000 sq. ft. and water the lawn thoroughly within 1 to 2 …Product details. Lesco 20-0-20 + 6% Iron St. Augustine Lawn Fertilizer 12,000 Sq.ft of coverage per 50 lb. bag Active: Atrazine This professional grade weed N feed fertilizer is excellent to use on St. Augustine lawn grass. This fertilizer provides the nutrients, including iron, needed togreen southern lawns when outside temperatures are cool.The Top Five Fertilizers for St Augustine Grass in Florida. Parameter. Miracle-Gro Lawn Food. The Andersons Humic DG. Simple Lawn Solutions. Scotts Lawn Food. GreenView Starter Fertilizer. N-P2O5-K2O. 36-0-6.St. Augustine has higher nitrogen requirements than zoysia, so it needs a fertile soil or consistent fertilizer applications. St. Augustine also requires good drainage, which means a silty or sandy soil and higher amounts of organic matter. This grass can tolerate a pH of 5.0-8.5 , giving it a larger range than zoysia.St. Augustine grass looks its best when it gets all the nutrients it needs, which is why periodically applying a general lawn fertilizer will increase the lawn’s lushness. Choosing between liquid, granular, and water-soluble fertilizer is mostly a matter of personal preference. All of the following lawn fertilizers … See more34:0:4 NPK fertilizer; Kills henbit and clover in lawns; Has 5% iron that makes grass greener; Pennington Ultragreen Southern Weed and Feed’s biggest selling point is that it’s both a quick-release and slow-release fertilizer.The fast-acting nitrogen will turn your St. Augustine turf into a lush green and dense lawn …Yearly Calendar for St. Augustinegrass Care and Culture Page 2 manganese (Mn), iron (Fe), sulfur (S), magnesium (Mg) and boron (B) should also be considered, especially if micronutrient deficiencies are expected for the lawn site. Other applications can be just a nitrogen fertilizer source or fertilizer with nitrogen and potassium (e.g., 15–0 ...BEST BANG FOR THE BUCK: Miracle-Gro Water Soluble Lawn Food, 5 lb. BEST ORGANIC: Milorganite 0636 Organic Nitrogen Fertilizer 32-Pound. BEST WITH SPRAYER: Simple Lawn Solutions Lawn Energizer ...Feb 14, 2024 · Now, let’s get down to brass tacks – finding the go-to fertilizer for St. Augustine grass could be that missing puzzle piece you’ve been looking for. Did you know this particular variety flourishes when its soil hits a sweet spot pH between 6 and 6.5? That tidbit was a game-changer from my own stash of gardening detective work geared ... Lack of Nutrition. The soil requires nitrogen, and a lack of it leads to yellowing especially during the hot summer season! However, you shouldn’t fertilize your grass with nitrogen during the summer to make it greener. Instead, put two ounces of iron sulfate for every five gallons of water, which is good for about 1,000 square feet of your ...43 lbs N/acre / (28/100) = 154 lbs fertilizer/acre. 2. Calculate how much fertilizer you need for your lawn area. Next, to determine how much fertilizer to apply to your lawn, multiply the fertilizer rate by the area of your lawn: fertilizer weight required = fertilizer application rate × lawn area.Fertilizer burn is a lawn care and gardening mistake that can cause plants or grasses to become scorched or burned. It can occur when a lawn or plants are over-fertilized, as well as when ...Jan 9, 2024 · For example, a 10-10-10 fertilizer has 10% nitrogen, 10% phosphorus, and 10% potassium. These ratios are ideal for promoting overall growth and health of St Augustine grass. Nitrogen-Only Fertilizers: Nitrogen is the most important nutrient for promoting lush green growth in St Augustine grass. Here I compiled photos of last years (2019) growing season .Products used, Lesco 15-5-10 and Milorganite.Ryobi 40v mower and Ryobi 40v string trimmer.I maint...Get free shipping on qualified All-Season, St. Augustine (Floratam) Lawn Fertilizers products or Buy Online Pick Up in Store today in the Outdoors Department. ... St. Augustine (Floratam) Season Use: All-Season Clear All. Sort by: Top Sellers. Top Sellers Most Popular Price Low to High Price High to Low Top Rated Products.The best ways to revive a St. Augustine grass lawn are to limit activity on the lawn, improve soil quality, water frequently, and mow on a high setting. Expert Advice On Improving ...Jan 26, 2021 · TurfGrassPro Blade Iron 15 – 0 – 0 is the best liquid fertilizer for St Augustine grass. It is guaranteed to make your lawn green and ready for the growing season. Designed for warm-weather grasses, Ferromec's liquid fertilizer also contains iron and sulfur to help your turf reach peak vitality. Plan on using 2-8oz of product per 1,000 ... Fertilizer Schedule for St. Augustine Grass. St. Augustine grass is a popular turf grass found in the Southeastern United States from Florida to the Gulf Coa...Spring lawn care tips and tricks for St. Augustine grass.Having a green St. Augustine lawn in the Spring and Summer is easy when we follow a few simple steps...Sep 17, 2019 ... The best way to determine when to apply spring fertilizer to St. Augustine grass is to monitor its growth. There's no need to apply any ...Sep 13, 2020 · LawnStar 16-4-8 NPK Fertilizer. Lawnstar’s liquid product is a great choice if you like using spray fertilizer. It has great value and will make your lawn grow in quickly and in a healthy manner. Features. It consists of an N-P-K ratio of 16-4-8, which is the exact N-P-K ratio that you want for St. Augustine grass. Make sure to wait until the final frost of the season, since applying fertilizer before then can harm your plants. After the first application, reapply fertilizer every eight weeks. For most St. Augustine lawns, that means one pound of soluble nitrogen per 1,000 square feet of grass.Oct 22, 2020 ... Pre-emergent 2 weeks before your usual last freeze, again 90 days later, and then the first week of September. Dimension, Halts, or Balan ...The 6 Best Fertilizers for St. Augustine Grass in 2023 - Lawn Unbound. February 6, 2023 by Linda Chan. As a homeowner with a lawn and garden, you know …Apr 30, 2022 ... ... fertilizer as, say, St. Augustine grass likes. So, with centipedegrass we'd fertilize it once, maybe up to two times per year. I like April ... The first application of fertilizer to St. Augustine grass should be made in spring when the grass is 50% green OR when soil temperatures are above 65 degrees F. Visit www.georgiaweather.net to determine local soil temperature. Fertilize St. Augustine grass every six weeks thereafter until mid-September. September. Before six weeks of the first frosting weather, you should fertilize your lawn. Use a fertilizer that contains high potassium and low nitrogen. And apply a …When to Plant St. Augustine Grass. St. Augustine grass grows best in the warmth of spring and summer, when high temperatures are normally 80-100 °F. Plant St. Augustine grass plugs or sod in full sun, at least 90 days before your region's first estimated fall frost, to give the grass plenty of time to establish.Buying Installing Maintenance Varieties New Installation How do I know if I got authentic Palmetto St. Augustine? You will know you are getting the “real deal” if you buy your Palmetto from an Authorized Distributor or from a licensed producer. Visit the “Where to Buy” section to find a farm or Authorized Distributor near you. […]Apr 8, 2021 · 46.15% of users selected Lawn Fertilizer Plus Iron, 7.69% selected Southern Triple Action, 23.08% selected Lawn Repair, 0% selected Roll Winter Survival and 23.08% selected Jonathan Green 11540. Every month we analyze your answers and change our rating. St. Augustine Grass is a popular lawn grass in the southern United States, and it’s known ... You'll learn how to identify St. Augustine grass, how often to water St. Augustine grass, and how to keep disease out of St. Augustine grass. Ask A Pro: 866-581-7378 Mon-Fri 9am-5pm ET Live Chat Contact Us. Fast Free Shipping On Your Entire Order * ... Fertilizer is key to giving your lawn the proper nutrients it needs to thrive.Centipede grass does not require extensive fertilization. Generally, you should apply a nitrogen-based fertilizer to your lawn. Additionally, make sure to stay away from potassium-rich mixes. The optimal fertilizer for your centipede lawn is a 15-0-15 mix. In brief, this means the suggested fertilizer mix will contain 15% Nitrogen, 0% ...Determine your grass type to find the best lawn fertilizer for your yard. Warm-season grasses such as bahia, bermuda, centipede, St. Augustine and zoysia grow vigorously throughout much of the year and need a little more attention than cool-season varieties.Augustine grass is a popular grass option for those in tropical or subtropical regions around the world. St. Augustinegrass is a warm-season grass, stoloniferous grass, that lacks tolerance to cold temperatures. As a warm-season grass, St. Augustinegrass grows best in warmer temperatures during the summer months, anywhere from 80-95 …Lawn fertilizers contain three crucial ingredients: potassium, phosphorus, and nitrogen. Firstly, potassium improves grass’s health so that it is more resistant to drought, cold, and disease. Secondly, phosphorus assists grass in developing thriving root systems. Finally, nitrogen helps grass grow quickly with vibrant green colors.Here, you need 6.6 pounds of nitrogen per 1, 000 square feet. You can quickly calculate how much fertilizer you need. Take your lawn’s square footage then divide by 1,000. (2,000/1,000) x 6.6 = 13.2 pounds of fertilizer. St Augustine grass should be fertilized three times per year.When to Winterize Saint Augustine Grass in Texas. Certain truisms exist in hot, humid Texas and one is that trees in a landscape will eventually shade the ya...Milorganite Fertilizer: https://amzn.to/3aABX54Weed Killer: https://amzn.to/3tskVPjWinterization Fertilizer: https://amzn.to/3pVJEclIronite: https://amzn.to/...Every 10 weeks during the growing season: Fertilize with slow-release fertilizer at the rate of 1lb – 1.5lbs per 1,000sq' (depending on your soil).WEED CONTROL & FERTILIZER Warning - Do not exceed the annual active ingredient quantity per acre as outlined on the label. LESCO ® Dimension 0.10% or 0.15% Plus Fertilizer LESCO Dimension 0.10% or 0.15% Plus Fertilizer LESCO® Dimension 0.10% LESCO® 0.43% Stonewall or 0.15% Plus Fertilizer Plus Fertilizer LESCO® 0.43% …Sep 17, 2019 ... The best way to determine when to apply spring fertilizer to St. Augustine grass is to monitor its growth. There's no need to apply any ...May 13, 2020 · Tested. Proven. Trusted. LESCO® fertilizers offer leading formulations and a proven track record for healthy, long-term results. We’ve dedicated more than 50 years to studying and perfecting the science of growing turfgrass. Along the way, we’ve developed exclusive techniques to deliver turf that looks good and stands up to all kinds of ... High in nitrogen. This lawn fertilizer by Miracle-Gro is a good choice for Bermuda grass because it is high in nitrogen and iron, therefore putting focus on achieving a dark green color. Bermuda grass will show quick results (within days) and thrive when fed with this fertilizer, which has a NPK ratio of 30-0-6.Bermudagrass and St. Augustine are prone to thatch. Centipedegrass can also promote it if overfertilized. 8. How to Apply Fertilizer Like a Pro in the Sunshine State. To avoid root burn and ensure healthy growth, you must spread the fertilizer uniformly across the lawn. The easiest way is with a broadcast spreader.St Augustine grass tips for fall 2021.FREE Winterizing guide:https://drive.google.com/file/d/1ulavP7ktYuykQPk2f8g6opoAUByyuNE1/view?usp=sharingIf your St Aug...7-0-20 Stress Blend is a high potassium, low nitrogen lawn fertilizer to help your turf in and out of stressful situations. ... Warm Season Lawns - Bermuda, St Augustine, Zoysia, Centipede, Bahia Coverage: 18 lb bag covers 6,000 …This fertilizer for St. Augustine grass is a concentrated soluble granule fertilizer for liquid application during cool and warm-season months. It comes in a 6.17 kgs or 13.6 pounds bag.Maintain 12 inches of spacing between the holes. If you put flags in the desired places, it will be easier to identify the spots and dig holes. Next, start digging the holes according to the plan. Make slightly larger holes than the …Water St. Augustine grass with 1-1.5 inches of water every week to revive it quickly. Apply nitrogen fertilizer and grub control, then mow the lawn high at 3 inches to make the grass green again. If the grass is dead, install new sod to revive and bring the lawn back to life.The best fertilizer for St Augustine grass is any fertilizer that has one pound of nitrogen for every 1,000 square feet of sod. Fertilizing every two months is ideal unless you apply slow release fertilizer that can be spread every 10 weeks. Here's How to Figure Out which Bag of Fertilizer to Choose.It’s OMRI-Listed as safe for organic gardening. Trident’s Pride fertilizer comes in an easy-to-pour jug—simply dilute the formula with water before applying to your grass or other plants. The company recommends using 4-6 ounces per gallon of water, so 1 gallon will last you for quite a while. Using too little fertilizer will not produce that lush, dark green color or rapid growth for which St. Augustine is known. On the other hand, too much fertilizer will create a haven for pests. The best fertilizer for St Augustine grass is any fertilizer that has one pound of nitrogen for every 1,000 square feet of sod. Having a lush, green lawn is a great way to add beauty and value to your home. But choosing the right type of grass for your lawn can be a difficult decision. One of the biggest ad...September. Before six weeks of the first frosting weather, you should fertilize your lawn. Use a fertilizer that contains high potassium and low nitrogen. And apply a …This fertilizer for St. Augustine grass is a concentrated soluble granule fertilizer for liquid application during cool and warm-season months. It comes in a 6.17 kgs or 13.6 pounds bag.
Generally, St Augustine grass can be fertilized between 2-6 times per year, all depending on your location. Due to the climatic range and geographical locations of where St. Augustine grass grows fall fertilizer applications differ depending on location. In northern areas where St Augustine will go dormant, no fertilizer is needed.. Godaddy vs wix
Choose your soil wisely – St Augustine grass loves well-drained soil with a pH level of 5.0 to 7.0. This is why it is important to take a soil sample to an extension offer for analysis. Use starter fertilizer that is high in phosphorous – Lightly add your starter fertilizer into the top 2-3 inches of topsoil.Feb 17, 2024 · Water St. Augustine grass with 1-1.5 inches of water every week to revive it quickly. Apply nitrogen fertilizer and grub control, then mow the lawn high at 3 inches to make the grass green again. If the grass is dead, install new sod to revive and bring the lawn back to life. Just follow these steps: Choose the best time to plant. Calculate square footage and spacing. Prep the site. Plant the grass plugs. 1. Choose the best time to plant. The best time to plant St. Augustine plugs is in the late spring or early summer. By this time in the southeast, temperatures are well above 80℉.Lawn fertilizers contain three crucial ingredients: potassium, phosphorus, and nitrogen. Firstly, potassium improves grass’s health so that it is more resistant to drought, cold, and disease. Secondly, phosphorus assists grass in developing thriving root systems. Finally, nitrogen helps grass grow quickly with vibrant green colors. Top 10 Best Fertilizers For St Augustine Grass 2021. 1. Scotts Turf Builder Starter Food. For developing a new lawn, you need a fertilizer that promotes rapid growth on the visible grass blades. It develops a robust root system. No doubt, Scotts Turf Builder is easily one of the best pics for that. Milorganite. 32 lb. 2,500 sq. ft. Organic Slow-Release Nitrogen Lawn and Garden Dry Lawn Fertilizer 6-4-0 The best fertilizer for St. Augustine Grass, like many others, will contain a relatively high concentrate of nitrogen. Nitrogen keeps the grass green and lush. The …St. Augustine. Best Fertilizer for St. Augustine Grass in Fall [Simple Lawn Care Technique] byMike Supdated 1:29 am, 1:29 am. 16-4-8 fertilizer is the ideal fall …Which fertilizer solution to use depends on where you live, what type of grass you're growing, and any lawn problems that might be present. Here's what we recommend. ... Luckily, Scotts® Turf Builder® Southern Triple Action can tackle all of those challenges in one fell swoop for St. Augustine, centipede, zoysia, and carpetgrass lawns.Lack of Nutrition. The soil requires nitrogen, and a lack of it leads to yellowing especially during the hot summer season! However, you shouldn’t fertilize your grass with nitrogen during the summer to make it greener. Instead, put two ounces of iron sulfate for every five gallons of water, which is good for about 1,000 square feet of your ...Some irregular brown patches in the lawn may be due to repeatedly mowing your St. Augustine grass too short too often, especially during dry times. Plants make their food (sugars) in the leaf blades using sunlight. This is called photosynthesis. If the grass does not have enough leaf blades left for photosynthesis the grass will die.Yes, Milorganite is safe for St. Augustine grass. While other fertilizers can cause a nitrogen overload that actually pulls moisture out of the grass, killing it, Milorganite doesn’t pose this risk. This is because Milorganite feeds soil microbes, which slowly release nitrogen and other nutrients as your grass needs it..