Summer in Charleston is no joke. With temperatures regularly hitting the 90s and humidity that feels even hotter, your lawn faces real stress from June through September.
The good news: Charleston’s warm-season grasses — Bermuda, St. Augustine, and Zoysia — are built for heat. But they still need the right care to stay green and healthy all summer long.
1️⃣ Water Early, Not Often
Watering frequency matters less than timing. In summer, water deeply 2–3 times per week, early in the morning (before 10 a.m.). This reduces evaporation and allows grass to absorb moisture before the heat peaks. Avoid watering in the evening — wet grass overnight creates conditions for fungal disease, which is already a risk in Charleston’s humid climate.
2️⃣ Raise Your Mowing Height
Cutting grass too short in summer is one of the fastest ways to stress your lawn. Raise your mower deck to 3–4 inches. Taller grass shades the soil, reduces moisture evaporation, and keeps roots cooler during the hottest months.
3️⃣ Watch for Signs of Heat Stress
Even the toughest grass shows signs of stress when pushed too far. Blades folding or rolling inward, a blue-grey tint instead of green, and footprints remaining visible after walking on the lawn are all warning signs. Don’t wait for browning — act at the first sign of stress.
4️⃣ Hold Off on Fertilizing During Peak Heat
Fertilizing during a heat wave pushes growth at the wrong time and can burn your lawn. In Charleston, pause heavy fertilization during July and August. Resume in early fall when temperatures start to drop and your grass is ready to respond.
5️⃣ Manage Weeds Before They Spread
Summer heat doesn’t slow down weeds. Dollar weed, crabgrass, and nutsedge are especially aggressive in the Lowcountry. Spot treat as soon as you see them — waiting makes the problem significantly harder to control.
6️⃣ Check and Adjust Your Irrigation System
Make sure your sprinkler heads are working properly and covering all areas evenly. Summer droughts in Charleston can be sudden and severe. A malfunctioning irrigation zone can cause irreversible damage within just a few days.
💡 Pro Tip: Charleston’s soils can become hydrophobic (water-repellent) in summer. If water is beading up and running off instead of soaking in, consider a lawn treatment or aeration to restore proper water absorption.
Ready for a lush lawn all summer long?
Let Olive Drab Property Services handle it. We know Charleston’s climate — and we know your grass.
Call 843-901-1966
