2026 Heatwave Lawn Care: How to Prevent Grass from Drying Out & Dying

During a heatwave, lawns are vulnerable to drying out and suffering from heat stress. With the right care, however, you can keep your grass healthy, green, and thriving even in extreme temperatures. Here’s how to protect your lawn during a heatwave and prevent it from drying out.

1. Water Early and Deeply

In a heatwave, watering early in the morning is crucial. Deep watering encourages grass to develop a strong root system. Watering deeply but less frequently allows grass to better tolerate high temperatures.

2. Raise the Mower Height

Mow your lawn slightly higher than usual during a heatwave. Longer grass helps shade the soil, reducing water evaporation and providing better protection against the sun.

3. Apply a Summer Fertiliser

A balanced, slow-release fertiliser will provide your lawn with the nutrients it needs during a heatwave. Be sure to choose one that’s designed for hot weather conditions, as it will promote growth without overstimulating the grass.

4. Use Mulch to Retain Moisture

If you have garden beds or bare patches, use mulch to help retain moisture and cool the soil. Organic mulches, such as straw or grass clippings, are a great way to keep your lawn hydrated during dry spells.

5. Limit Lawn Traffic

Avoid walking on your lawn during a heatwave, as this can cause further stress. Lawn damage from foot traffic is more likely when the grass is already weakened by the heat.

6. Monitor for Pests

Heatwaves can attract pests such as grubs and beetles. Check your lawn regularly for signs of infestation and treat as needed to prevent further damage.

Conclusion

By following these heatwave lawn care tips, you can prevent your grass from drying out and ensure it stays green and healthy throughout the hottest weather. Proper watering, mowing, and fertilisation will help your lawn thrive, even during extreme heat.