Beating the Heat: Watering and Mowing Schedules for Louisiana Lawns in Late Summer
9/28/2026
From late July to early September, Louisiana experiences peak heat and humidity, which is often paired with dry spells in between storms. That intensity means your lawn care routine needs to adjust accordingly. Heat stress is real, and if your routine doesn't keep up, your lawn will show it. Here's the watering and mowing schedule to follow through late summer, plus warning signs that your turf needs attention.
Your lawn needs 1 to 1.5 inches of water per week, including rainfall. A cheap rain gauge is the easiest way to track how much you're actually getting. Water deeply 1 to 2 times a week rather than giving it a light daily sprinkle. Deep watering pushes roots further into the soil, which builds drought tolerance. Daily shallow watering does the opposite. It keeps roots close to the surface and raises your risk of fungal disease in Louisiana's humidity. The best time to water is early morning, between 6 and 10 a.m. This cuts down on evaporation and gives grass blades time to dry out before evening, which helps keep fungus at bay.
Extreme heat calls for extra protection, and raising your mowing height is one of the easiest ways to give it. Taller grass shades the soil and protects the root system, so aim to mow about half an inch higher than your grass type's normal range.
Specific heights for Louisiana's common lawn grasses:
During active summer growth, plan to mow every 5 to 7 days. Never remove more than a third of the blade height in a single cut. Taking off more stresses the plant and can shock it in the heat. Just like watering, early morning is the best time to mow. Afternoon heat is hard on both your lawn and you. Keep your blades sharp, too. Dull blades tear grass instead of cutting it cleanly, and torn tips are more vulnerable to disease and moisture loss.
Watch for these warning signs:
The last stretch of summer is here. Stick to a deep, weekly watering schedule. Mow a little taller and more often, and keep your blades sharp so your lawn will come through the heat in good shape. If you need advice or equipment to help you finish the season strong, our team at Goldman Equipment is ready to help.
Water deeply 1 to 2 times a week rather than daily. Your lawn needs 1 to 1.5 inches of water per week total, including rainfall. Deep, infrequent watering builds stronger roots and lowers your risk of fungal disease compared to light daily watering.
Early morning, between 6 and 10 a.m., is best. Watering then cuts down on evaporation and gives grass blades time to dry before evening, which helps prevent fungus from taking hold overnight.
Mow about half an inch higher than your grass type's normal range. For Louisiana lawns, that's roughly 2.5 to 4 inches for St. Augustine, 1.5 to 2.5 inches for centipede and zoysia, and 1 to 2 inches for Bermuda.
Every 5 to 7 days during active summer growth. Just don't remove more than a third of the blade height in any single cut — taking off more stresses the grass and can shock it in the heat.