The article offers valuable insights into how to care for a lawn during intense heatwaves, which is crucial given the increasing frequency of extreme heat events. A key takeaway is that lawns do not need daily watering even in hot weather; instead, watering two to four times a week is adequate depending on local conditions and soil type. Experts emphasize watering deeply and infrequently to encourage roots to grow deeper, resulting in a more drought-resistant lawn.

Another important point is the best time to water lawns: early morning hours between 5 a.m. and 9 a.m. This timing allows the grass to absorb moisture before the heat of the day causes evaporation and reduces the risk of fungal diseases that can occur if watered at night. Watering during midday is discouraged because much of the water evaporates quickly and water droplets can even harm grass blades in intense sun.

The article also explains how grass naturally goes dormant and browns in heat stress to protect itself, which can be worrying to homeowners but is normal and reversible with proper care. It points out that frequent shallow watering only wets the surface and leads to shallow roots, making grass more vulnerable. Instead, a long soak that penetrates 6 to 8 inches deep is ideal.

Additionally, lawn experts recommend adjusting watering based on soil type—sandy soils may require more frequent, lighter watering, while heavier soils retain moisture longer.

This article dispels many myths about lawn watering in heatwaves and encourages smarter, more water-efficient practices that help maintain healthy, resilient lawns even in extreme heat. It offers practical, science-backed advice that is accessible for everyday gardeners looking to protect their green spaces sustainably during hot periods.

provided by Tom's Guide at Aug. 11, 2025

Original article: https://www.tomsguide.com/home/outdoors/gardening-experts-share-how-to-water-your-lawn-in-a-heatwave-youll-be-surprised