
Fertile, healthy grass starts with smart timing and precise feeding. During the summer months, lawns face intense stress—from soaring temperatures to unexpected dry spells—and while fertilizing can support growth, it can also cause more harm than good if done incorrectly. Whether you’re caring for cool-season or warm-season grass, understanding what your lawn needs in the heat is the first step toward lush, resilient turf.
Many homeowners assume that more fertilizer means a greener lawn. In reality, applying fertilizer at the wrong time, using too much nitrogen, or choosing the wrong formula can backfire. That’s why having a season-specific fertilizing plan is essential. This guide covers what to know before you feed your lawn this summer, along with practical tips for safe, sustainable fertilizing that avoids stress and disease.
- What Summer Means for Grass Health
- Fertilizing Cool-Season Grasses: Less Is More
- Avoiding Fertilizer Burn
- Warm-Season Grasses: Thrive with Targeted Summer Fertilizing
- Fertilizing: Water and Weather Matter
- Do You Know Your Soil?
- Common Summer Lawn Diseases Linked to Fertilizer Use
- Applying Fertilizer the Right Way
- Fertilizing with Precision, Not Pressure
- Ready to Rethink Your Summer Lawn Care?
What Summer Means for Grass Health
Summer in Conway SC brings longer daylight hours and hotter temperatures, which accelerates plant growth but also increases water loss. While warm-season grasses like bermudagrass and zoysiagrass tend to thrive during this period, cool-season grasses often struggle. That difference plays a big role in how and when you should fertilize.
Grass roots are highly active in spring and fall, but summer presents a challenge. High heat, inconsistent rainfall, and humidity can all interfere with nutrient uptake. If your lawn isn’t absorbing fertilizer efficiently, the product may sit on the surface, potentially burning the grass or running off into drains, wasting money and harming the environment.
Fertilizing Cool-Season Grasses: Less Is More
Cool-season grasses such as fescue, perennial ryegrass, and Kentucky bluegrass are more vulnerable during summer. These grasses naturally slow their growth to conserve energy when the heat becomes too much. Applying high levels of nitrogen during this dormancy period pushes growth at the wrong time, draining the plant’s energy and increasing stress.
Instead of force-feeding the lawn, use a gentler approach. Opt for low-nitrogen, slow-release fertilizers that offer steady nourishment. Products containing methylene urea or urea triazone release nitrogen gradually, avoiding the growth spurts that often lead to fungal disease or brown patches.
Avoiding Fertilizer Burn
Fertilizer burn occurs when excess salts accumulate in the soil and draw moisture away from grass roots. Signs include brown streaks or dry, scorched patches. This risk increases when temperatures exceed 82°F or when fertilizer is applied during drought or high humidity. Always water in fertilizer promptly after application and never feed dormant or stressed lawns.
If your cool-season grass appears brown or brittle in the heat, hold off on fertilizing in Conway SC until rainfall returns and temperatures drop. Dormancy is a survival tactic—not a sign your lawn needs more feed.
Warm-Season Grasses: Thrive with Targeted Summer Fertilizing

Lawn care in Conway SC
Warm-season turf types such as St. Augustinegrass, centipedegrass, and zoysiagrass prefer the heat. Summer is their main growing season, and a measured amount of fertilizer helps maintain their vibrant green color and density.
Still, moderation matters. Too much nitrogen can cause rapid, soft growth that’s more prone to disease. Spoon-feeding your lawn—meaning smaller, more frequent applications—can prevent this. Apply between half a pound to one pound of nitrogen per 1,000 square feet every four to six weeks, depending on your grass type and local conditions.
Use a slow-release formula and look for fertilizers that include secondary nutrients like iron or magnesium, which enhance color without encouraging excessive top growth.
Fertilizing: Water and Weather Matter
Fertilizing is not just about what you apply, but when. Always monitor weather conditions closely before feeding your lawn. Avoid fertilizing just before heavy rain, which can wash nutrients away before the roots absorb them. Similarly, skip feeding during extreme heatwaves. High humidity and temperatures over 86°F combined with moist foliage can trigger lawn diseases that spread quickly and are difficult to treat.
A useful tip in lawn care in Conway SC is to add the day’s high temperature and relative humidity together. If the total exceeds 150, conditions are likely too risky for fertilizer application, particularly nitrogen-rich ones. Waiting until conditions improve can protect your turf from unnecessary stress and potential damage.
Do You Know Your Soil?
Before choosing a fertilizer, it pays to understand what your soil already has. A soil test reveals nutrient levels, pH, and organic matter content, allowing you to apply only what’s needed. Blind fertilizing without this knowledge risks overdoing it and can lead to poor root development, runoff, or pest attraction.
For example, if your soil test shows low potassium but high nitrogen, selecting a balanced fertilizer such as 15-0-15 would be far more beneficial than a nitrogen-heavy 21-0-0 product. Soil tests are inexpensive and highly effective for long-term lawn health.
Common Summer Lawn Diseases Linked to Fertilizer Use
Brown patch, dollar spot, anthracnose, and Pythium blight are all common diseases that thrive when lawns are overfed in warm, humid conditions. They spread fast and can undo months of lawn care in a matter of days.
Some of these conditions, like dollar spot, are triggered by low nitrogen, while others, such as Pythium, are fueled by excess nitrogen and wet leaves. This is where timing and product choice become crucial.
Using fungicides may be necessary if your lawn has a history of disease, but the best protection is a consistent lawn maintenance routine that avoids overstimulation. Regular mowing at the proper height, clean blades, and smart watering practices will go a long way in disease prevention.
Applying Fertilizer the Right Way
- Fertilize early in the morning or late evening to prevent evaporation and reduce stress on the lawn
- Always water fertilizer into the soil after application unless it is labeled “no water needed”
- Use a spreader for even coverage and avoid overlapping lines
- Clean up any fertilizer from driveways or sidewalks to prevent runoff
- Wait a few days after mowing to fertilize so the grass has some leaf surface to absorb nutrients
- Never fertilize dormant grass unless instructed by a professional
Fertilizing with Precision, Not Pressure
It can be tempting to chase quick results, especially if the lawn looks patchy or pale, but summer is not the time for aggressive feeding. A lighter hand with a smarter formula often yields better results.
If you’re unsure which products to use or how to time them correctly, Conway Lawn Care Service provides reliable insight and hands-on experience to ensure your fertilizing efforts support, not sabotage, your lawn.
Ready to Rethink Your Summer Lawn Care?
A beautiful summer lawn doesn’t come from pouring on the fertilizer. It comes from knowing your soil, choosing the right product, and working with the weather, not against it. Summer fertilizing is about helping your lawn survive the season, not forcing it to perform beyond its limits.
Call Conway Lawn Care Service now to speak with a local lawn expert who can recommend the right fertilizer, schedule, and strategy for your turf. Whether you’re maintaining an established lawn or reviving one that’s struggling, a smarter fertilizing plan can help you enjoy a greener, healthier yard all summer long.
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Conway Lawn Care Service
Conway, SC 29526
843-602-9872
http://conwaylawncareservices.com
Areas Served: Carolina Forest, Myrtle Beach, North Myrtle Beach, Conway, Surfside Beach, Forestbrook