Late Summer Lawn Care: How to Keep Your Grass Green Through the Heat

August brings some of the hottest, driest days of the year, and your lawn feels it. Even the healthiest grass can struggle under the intense sun, high temperatures, and unpredictable rainfall. But with a few strategic adjustments to your lawn care routine, you can maintain a lush, green yard through late summer and set the stage for a strong fall recovery. Here’s how to keep your lawn looking its best as summer peaks.

It’s tempting to give your lawn a quick sprinkle every day, but shallow watering encourages weak roots and leaves grass vulnerable to drought and disease. Instead, water deeply and less frequently—aim for about one inch of water per week, delivered in one or two sessions. Early morning is the best time to water, as it minimizes evaporation and allows the grass to dry before evening, reducing the risk of fungal issues.

If you notice water running off or pooling, slow down the watering session or break it into intervals to allow the soil to absorb moisture. Adjust your schedule based on rainfall, and consider using a rain gauge to track how much water your lawn receives naturally.

During the heat of August, set your mower blade higher than usual—about 3 to 3.5 inches is ideal for most grass types. Taller grass shades the soil, helping it retain moisture and protecting roots from the sun’s intensity. It also encourages deeper root growth, which is essential for drought resistance.

Always mow with sharp blades to avoid tearing the grass, which can lead to brown tips and increased susceptibility to disease. And remember the one-third rule: never remove more than one-third of the grass blade in a single mowing session.

While spring and fall are prime times for fertilizing, a light application of slow-release fertilizer in August can help your lawn recover from summer stress. Avoid heavy feeding, as excess fertilizer can burn grass and promote rapid, weak growth. Choose a product formulated for your specific grass type, and follow the label instructions carefully.

Weeds often thrive when lawns are stressed. August is a good time to spot-treat weeds with a targeted herbicide or pull them by hand. Keep an eye out for signs of pests, such as brown patches or chewed blades, and address problems promptly to prevent widespread damage.

Late summer is the perfect time to plan for fall overseeding, aeration, or dethatching if your lawn needs it. Mark your calendar and consult a professional if you’re unsure about timing or techniques.

Maintaining a green, healthy lawn through August’s heat can be challenging, but the right strategies make all the difference. If you need help with summer lawn care, DK Landscaping’s team offers tailored solutions to keep your yard looking its best—no matter the season.