Does your lawn look a little sad and brown when the summer sun beats down? You work hard on your yard, but the heat can really stress out your grass. Choosing the right food for your lawn in the summer is tricky. Many bags of fertilizer promise miracles, but some just don’t work well when it’s hot. You worry about burning your grass or wasting money on the wrong product.
Don’t let the summer heat win the battle for your beautiful green space! In this guide, we will break down exactly what your lawn needs during the hottest months. You will learn the secrets to picking a summer fertilizer that feeds your grass without harming it. We will show you how to keep that vibrant color all season long.
Ready to transform your summer lawn from struggling to stunning? Keep reading, and let’s dive into the best strategies for summer lawn feeding!
Top Summer Fertilizer For Lawns Recommendations
- Scotts Turf Builder SummerGuard Lawn Food with Insect Control kills and protects against listed bugs, and feeds and strengthens your lawn against heat and drought
- Controls listed lawn insects like ants, armyworms, chinch bugs, crickets, fleas, grasshoppers, spiders, and ticks
- Apply bug killer plus fertilizer to a dry lawn in the summertime when insect activity or damage is first observed
- This lawn care product can be used on any grass type
- One 13.35 lb. bag of Scotts Turf Builder SummerGuard Lawn Food with Insect Control covers 5,000 sq. ft.
- Scotts Turf Builder Lawn Food feeds and strengthens grass to help protect against future problems
- Fertilizer builds strong, deep roots and improves the lawn's ability to absorb water and nutrients (vs. unfed lawn)
- Apply lawn care product to a wet or dry lawn
- Grass fertilizer works on any grass type
- One 12.5 lb. bag of Scotts Turf Builder Lawn Food covers 5,000 sq. ft.
- Scotts Turf Builder Summer Lawn Food is a fertilizer that builds strong, deep roots and greens grass with up to 50% less water (vs. unfed turf maintained using university guidelines for weekly volume water replacement for established turf)
- This 2-in-1 fertilizer plus water maximizer is powered by Everydrop Technology, a wetting agent which helps drives water into hard, dry soil
- Apply to a dry lawn in the summertime or in drought conditions
- This lawn care product can be used on all grass types
- One 9.42 lb. bag of Scotts Turf Builder Summer Lawn Food covers 4,000 sq. ft.
- DUAL-ACTION FORMULA: Scotts Green Max Lawn Food is a 2-in-1 grass fertilizer plus iron supplement that feeds your lawn and provides deep greening in just 3 days
- QUICK, GREEN RESULTS: This lawn care product contains 5% iron, a micronutrient that enhances the greening process for fast results
- APPLICATION: Apply this fertilizer plus iron supplement for green grass to any grass type in the spring, summer, or fall
- NO STAINING: Guaranteed not to stain concrete, driveways, or other surfaces surrounding your lawn (when used as directed)
- PEOPLE & PETS DON'T NEED TO WAIT: OK to re-enter lawn immediately after product is applied
- Covers 6,000 sq ft (18 lb) - OR - 15,000 sq ft (45 lb)
- Contains 3% Iron + Bio-Nite
- Analysis is 7-0-20:: N-P-K
- Great for a hearty pop of color and sweet relief for a stressed lawn
- Scotts Turf Builder SummerGuard Lawn Food with Insect Control kills and protects against listed bugs, and feeds and strengthens your lawn against heat and drought
- Included insecticide controls listed lawn pests like ants, armyworms, chinch bugs, crickets, fleas, grasshoppers, spiders, and ticks
- Apply bug killer plus fertilizer to a dry lawn in the summertime when insect activity or damage is first observed
- This lawn care product can be used on any grass type
- One 40.05 lb. bag of Scotts Turf Builder SummerGuard Lawn Food with Insect Control covers 15,000 sq. ft.
- Complete NPK Lawn Food: 16-4-8 is the perfect blend of key macronutrients. This lawn liquid food turf fertilizer also contains Seaweed & Fish.
- Contains High Quality Feed Grade Ingredients: Nourish your lawn with pure liquid Nutrients in a ready to use sprayer
- Easy To Use: Designed to be easily applied. This complete Nitrogen, Phosphate and Potash formula gives your grass greening & growth while providing nutrients for lush lawns
- All Grass types: Including Bermuda, St. Augustine, Zoysia, Buffalo, Centipede, Florida Palmetto, Bahia, Fescue, Ryegrass & Kentucky Bluegrass
- Produced In The United States: 16-4-8 is manufactured in the United States of America, by a family owned business with 25 years of former experience in the commercial professional turf industry.
- WEED KILLER PLUS LAWN FOOD: Scotts Turf Builder Weed & Feed3 weed killer plus fertilizer for grass kills existing listed weeds and feeds to thicken your lawn and crowd out future weeds
- WEED CONTROL FOR LAWNS: These weed killer plus lawn fertilizer granules control over 50 listed lawn weeds, including clover, dandelion, plantain, morningglory, chicory, eveningprimrose, and purslane
- WEED AND FEED FOR LAWNS: Apply this combination weed control and lawn food to your wet lawn when weeds are actively growing and daytime temperatures are consistently between 60°F and 90°F; don't apply more than 2X per year
- USE ON LISTED GRASS TYPES: Apply this lawn care product to Bahiagrass, Bermudagrass, Bluegrass, Centipedegrass, Fescue, Ryegrass, and Zoysiagrass (temporary discoloration may occur on some grasses)
- DO NOT USE ON: Do not use this weed killer for lawns on St. Augustinegrass (including Floratam), Dichondra, Lippia, Carpetgrass, and Bentgrass lawns
Your Essential Guide to Choosing the Best Summer Lawn Fertilizer
Summer is a time for lush, green lawns, but the heat can stress your grass. Using the right fertilizer keeps your lawn healthy and vibrant. This guide helps you pick the perfect summer food for your grass.
Key Features to Look For in Summer Fertilizer
When you shop, look for specific features that help your lawn survive the summer heat.
- Slow-Release Nitrogen: This is the most important feature. Slow-release nitrogen feeds your lawn steadily over several weeks. It prevents quick, weak growth that burns easily in the sun.
- Balanced N-P-K Ratio: Look at the three numbers on the bag (Nitrogen-Phosphorus-Potassium). For summer, you want a formula with a higher first number (Nitrogen) but lower Phosphorus (the middle number). Potassium (the last number) is crucial for heat and drought resistance.
- Weed and Pest Control (Optional): Some summer fertilizers include weed killers or insect controls. Decide if you need these extras or prefer a standalone fertilizer.
Important Materials in Summer Lawn Food
The ingredients determine how well the fertilizer works.
Nitrogen (N): Nitrogen makes your grass green. In summer, choose synthetic slow-release forms like urea or sulfur-coated urea. These release nutrients slowly, avoiding burn.
Potassium (K): Potassium is your lawn’s defense shield. It helps the grass manage water stress and fight off diseases caused by high temperatures. Always ensure your summer formula has adequate Potassium.
Micronutrients: Sometimes, fertilizers include small amounts of iron or magnesium. Iron helps deepen the green color without forcing too much growth.
Factors That Improve or Reduce Fertilizer Quality
The quality of the product matters, but so does how you use it.
What Improves Quality:
- High-Quality Coatings: Better coatings on slow-release nitrogen mean the fertilizer lasts longer and feeds more consistently.
- Correct Application: Following the bag’s instructions precisely guarantees the best results.
- Proper Watering: Always water the fertilizer in lightly after application to start the feeding process and prevent burning the blades.
What Reduces Quality (or Harms Your Lawn):
- Too Much Fast-Release Nitrogen: If the fertilizer is mostly fast-release nitrogen, your grass will grow too quickly. Hot weather then stresses this weak growth, leading to brown patches (burn).
- Applying During Peak Heat: Applying fertilizer when temperatures are consistently over 90°F can stress an already struggling lawn. Wait for slightly cooler days if possible.
- Uneven Spreading: Applying too much fertilizer in one spot results in dark green stripes followed by yellow, dead areas.
User Experience and Use Cases
Think about your lawn type and your busy summer schedule when choosing.
For the Busy Homeowner: Look for “Weed and Feed” combos if you want one application to handle multiple tasks. Slow-release formulas are best because they require fewer trips to the spreader.
For Drought-Prone Areas: Prioritize fertilizers with high Potassium content. These formulas help your grass use water more efficiently, keeping it greener longer between waterings.
For New Lawns (Established After Spring): Use a lighter application rate. You want steady, gentle feeding, not rapid growth that might struggle in the heat.
Summer Fertilizer FAQs
Q: Why can’t I just use my spring fertilizer in the summer?
A: Spring fertilizers often have higher fast-release nitrogen. This forces quick, tender growth that burns easily when summer heat and sun hit hard. Summer formulas use slow-release nutrients.
Q: How often should I apply summer lawn food?
A: Most high-quality summer fertilizers are designed to last 6 to 8 weeks. You usually only need two or three applications between June and August, depending on your grass type.
Q: What is the ideal N-P-K ratio for summer?
A: A good summer ratio emphasizes Nitrogen and Potassium. Look for something like 16-4-8 or 20-5-10. The middle number (Phosphorus) should generally be lower in the summer.
Q: Will fertilizer make my lawn grow during a drought?
A: Fertilizer helps the grass stay healthy, but it cannot replace water. If you are under severe drought restrictions, it is better to stop fertilizing until watering is allowed again. Fertilizer needs moisture to work.
Q: How soon after applying fertilizer should I water my lawn?
A: You should water lightly right after application—just enough to wash the granules off the grass blades and into the soil. This activates the nutrients and prevents burning.
Q: Can I apply fertilizer when it is 90 degrees outside?
A: It is best to avoid applying fertilizer when daytime temperatures are consistently above 90°F. Wait for a cooler day (under 85°F) or apply very early in the morning, and always water it in immediately.
Q: What does “slow-release” actually mean?
A: Slow-release means the nutrients break down slowly over time, usually triggered by moisture and soil temperature. This gives your lawn consistent food instead of a big, short-lived burst.
Q: Is granular or liquid fertilizer better for summer?
A: Granular fertilizers are easier for most homeowners to spread evenly and often contain the necessary slow-release components for long feeding times. Liquids work faster but require more frequent application.
Q: My lawn has brown spots after fertilizing. What happened?
A: You likely applied too much fertilizer in that area, or you applied it when the grass was dry and did not water it in immediately. This is called fertilizer burn.
Q: Do I need a special fertilizer for St. Augustine grass in summer?
A: Yes. Warm-season grasses like St. Augustine thrive with summer feeding. Ensure the product is specifically safe for your grass type, as some fertilizers can damage sensitive grass varieties.