Does your lawn look tired and brown when the summer sun beats down? Many homeowners struggle to keep their grass green and healthy during the hottest months. Summer heat and dry spells put a lot of stress on your lawn. Choosing the wrong fertilizer can actually hurt your grass instead of helping it.
It is easy to feel confused by all the different bags of fertilizer at the store. Do you need more nitrogen? Should you look for slow-release options? These tough choices can lead to wasted money and a less-than-perfect yard. We understand this frustration, and we are here to clear up the confusion.
This guide will show you exactly what your lawn needs to thrive this summer. You will learn to pick the best fertilizer formula for your specific grass type and climate. By the end, you will feel confident in making the right application. Keep reading to unlock the secrets to a lush, vibrant summer lawn!
Top Summer Fertilizer For Lawns Recommendations
- Feeds and strengthens your lawn against heat and drought
- Kills and protects against listed bugs
- Won't burn lawn—guaranteed
- Your lawn will begin to wilt when water is needed. Take advantage of nature's sprinkler and rely on the rain to water your lawn.
- A healthy lawn can clean the air, produce oxygen, prevent runoff and reduce soil erosion
- Feeds and strengthens your lawn against heat and drought
- Kills and protects against listed bugs
- Won't burn lawn—guaranteed
- Your lawn will begin to wilt when water is needed. Take advantage of nature's sprinkler and rely on the rain to water your lawn.
- A healthy lawn can clean the air, produce oxygen, prevent runoff and reduce soil erosion
- Feeds for deep greening in just 3 days
- Dual-action, 2-in-1 formula feeds and supplements with iron
- Guaranteed not to stain when used as directed
- Apply to any grass type; OK to re-enter lawn immediately after product is applied
- Recommended for many lawns as part of the Scotts Lawn Care Plan; Not sold in FL
- WHERE TO USE: Lawn fertilizer for grass can be used on any grass type
- GRASS FERTILIZER FOR LAWNS: Scotts Turf Builder Lawn Food feeds and strengthens your grass to help protect against future problems
- STRONG ROOTS: Our pesticide-free lawn food for grass builds strong, deep roots, improving your lawn's ability to absorb water and nutrients (vs unfed lawn)
- HOW TO APPLY: Apply to a wet or dry lawn in spring, summer, or fall
- Green Grass with up to 50% less water (When used as directed, greening effects last up to 6 weeks, results will vary due to temperature and turfgrass type)
- 2 in 1 lawn food and water maximizer
- Powered by Everydrop Technology
- Safe on all grass types
- Builds strong, deep roots
- Up to 2X more powerful dandelion and clover control (vs. previous formula)
- Clears out dandelions and clover—satisfaction guaranteed
- Weedgrip Technology grips the weeds you see—and the ones you don't
- Scotts most powerful weed and feed
- Feeds to thicken lawns and crowd out weeds
- SOUTHERN GRASS FERTILIZER: Scotts Turf Builder Southern Lawn Food is a pesticide-free lawn fertilizer specially formulated for Southern lawns
- WHEN TO APPLY: Apply this fertilizer for grass during the growing season in spring, summer, or fall; for fast results, lightly water in after application
- WHERE TO USE: This lawn care product is formulated for Southern grass types; people and pets can re-enter the lawn after application
- BUILDS STRONG ROOTS: The included Scotts All-in-One Particles in this lawn food for grass build strong, deep grass roots to protect against heat and drought
- COVERAGE: One 14.06 lb. bag of Scotts Turf Builder Southern Lawn Food covers 5,000 sq. ft.
Choosing the Best Summer Fertilizer for Your Lawn: A Buyer’s Guide
Summer heat puts a lot of stress on your grass. Proper feeding keeps your lawn green and strong when temperatures rise. This guide helps you pick the right summer fertilizer.
Key Features to Look For
Slow-Release Nitrogen
Nitrogen makes grass green. In summer, you need slow-release nitrogen. This means the fertilizer feeds your lawn slowly over many weeks. Fast-release nitrogen can burn your grass in hot weather. Look for bags listing “slow-release” or “water-insoluble nitrogen” (WIN).
Low Phosphorus Content
Phosphorus helps roots grow. Most established lawns already have enough. Many states limit phosphorus in lawn fertilizers. Check the middle number on the N-P-K ratio (Nitrogen-Phosphorus-Potassium). For summer, a lower middle number is usually better.
Presence of Potassium (Potash)
Potassium is vital for summer health. It helps the grass handle stress like heat and drought. Make sure the third number on the N-P-K ratio is significant. Good summer blends often have higher potassium.
Important Materials in Summer Fertilizers
Organic vs. Synthetic
Synthetic fertilizers offer quick, precise feeding. They are made in a lab. Organic fertilizers come from natural sources like manure or bone meal. They improve soil health over time but work slower. Many homeowners mix both for the best results.
Micronutrients
While Nitrogen, Phosphorus, and Potassium (Macronutrients) are most important, micronutrients matter too. Look for small amounts of iron or magnesium. Iron helps deepen the green color without forcing too much growth.
Factors That Improve or Reduce Quality
Weather Matching
The quality of your result depends on when you apply. Applying fertilizer right before a heavy rain is good. Applying it when the ground is bone dry or temperatures are extremely high (over 90°F) can reduce quality and increase burn risk. Always water the fertilizer in after application unless the product specifically says not to.
Granule Size and Spreader Calibration
Uniform application improves quality. If the granules are too fine, they blow away easily or clump up. If you use a broadcast spreader, make sure it is calibrated correctly. Uneven spreading leads to patchy, striped lawns.
User Experience and Use Cases
For High-Traffic Lawns
If kids or pets play often on your lawn, choose a fertilizer that promotes durability. Slow-release nitrogen feeds consistently, helping the grass recover faster from wear and tear.
Dealing with Drought Stress
If your area is dry, skip heavy feeding. Instead, use a lighter application of a high-potassium product. This supports root resilience. Never fertilize dormant, brown grass heavily; wait until watering restrictions lift or the grass starts greening again.
10 Frequently Asked Questions (FAQ) About Summer Lawn Fertilizers
Q: When is the best time to fertilize my lawn in summer?
A: Apply fertilizer in the early summer (June) and possibly a lighter feeding in mid-summer (July/August), depending on your grass type and local heat. Avoid the hottest weeks.
Q: Can summer fertilizer burn my grass?
A: Yes, it can. Fast-release nitrogen applied too heavily or without enough water after application causes fertilizer burn. Always follow the bag instructions precisely.
Q: What N-P-K ratio is best for summer?
A: Look for ratios where the middle number (P) is low, and the third number (K) is decent, like 24-0-12 or 15-0-15. Nitrogen should be mostly slow-release.
Q: Should I use weed-and-feed products in summer?
A: Generally, no. Most broadleaf weed killers in weed-and-feed products do not work well in high heat. They can also stress your grass. It is better to spot-treat weeds separately.
Q: How often should I apply summer fertilizer?
A: Most homeowners apply 1 to 2 times during the summer months, spaced about six to eight weeks apart, based on the product instructions.
Q: Does fertilizer help my lawn survive drought?
A: Fertilizing too much during a drought hurts the lawn. A light application of potassium helps the roots cope, but heavy feeding requires more water, which might not be available.
Q: Do I need to water the fertilizer in?
A: Yes, almost always. Watering dissolves the fertilizer granules so the roots can absorb the nutrients. It also washes granules off the blades of grass, preventing burns.
Q: What type of grass benefits most from summer feeding?
A: Warm-season grasses (like Bermuda or Zoysia) thrive on summer feeding. Cool-season grasses (like Fescue or Kentucky Bluegrass) often need less feeding during peak summer heat.
Q: Can I use a liquid fertilizer instead of granular in summer?
A: Liquid fertilizers work quickly but can also cause burn more easily if misapplied. They are great for quick color boosts, but granular slow-release is often safer for consistent summer feeding.
Q: What if my lawn looks yellow in July?
A: Yellowing often means a lack of nitrogen or iron. Check your watering schedule first. If watering is fine, apply a light, balanced, slow-release summer formula to green it up safely.