Gardeners across the UK have been warned not to water their brown lawns during the ongoing drought and heatwave, as experts stress that browning grass is a normal survival mechanism. With no rain for over two weeks in some areas and hosepipe bans in effect, garden specialists advise conserving water for more vulnerable plants.
Why Brown Lawns Are Normal During Drought
Laura Bradbury, Head of Ecommerce at Vonhaus, explained: "After several spells of hot and dry weather, many lawns will already have lost some of their green colour. While this can be frustrating, established grass is often more resilient than it looks and may recover once cooler temperatures and regular rainfall return."
Chris McIlroy, lawn expert at The Grass People, added: "What gardeners need to identify is whether they’re looking at lawn dormancy or death. During extreme heat, cool-season grasses such as ryegrass and fescue can enter dormancy. This can look dramatic but it’s not lawn death. The roots can still be alive and well underneath."
Signs of Lawn Dormancy vs. Death
McIlroy outlined key indicators: uniform browning across the lawn, dry and crumbly soil, and grass blades that snap easily all suggest dormancy. In contrast, patchy browning, fungal growth such as mould or a pinkish tinge, and mushy water-logged soil could signal that the lawn is dying.
Jonathan Davis, a grass expert at Lawnsmith, advised: "It’s easy to panic and overdo it with lawn treatments when you spot browning but really it’s best to leave them alone. Avoid fertilising, aerating and mowing and be careful about overwatering, as this could stress the lawn more."
Watering Priorities and Techniques
Bradbury recommended: "Rather than using limited water on the entire lawn, homeowners should prioritise the plants that need it most, including containers, hanging baskets, vegetables and anything recently planted." She also suggested adding mulch around flower beds and containers to help soil retain moisture.
Davis emphasised timing: "If you have a hosepipe ban or are just trying to make the most of your watering efforts, water early in the morning. This means water is more likely to reach its roots, rather than just evaporate in the heat. Deep infrequent watering encourages grass to grow stronger, deeper roots."
Adjusting Lawn Mowing Practices
Bradbury advised: "Mowing less frequently and raising the cutting height allows the grass to remain slightly longer, which helps shade the soil and retain moisture. If the lawn has stopped actively growing, it may be better to leave it until conditions improve."
Hosepipe Bans in Effect
South East Water introduced an official temporary ban covering most of Kent from Friday 3 July. Southern Water brought in restrictions from Friday 10 July, impacting customers in Hampshire and on the Isle of Wight. South West Water also introduced restrictions in parts of Devon on Tuesday 14 July. These bans restrict the use of a hosepipe connected to a mains tap but not water itself; a lawn can still be hydrated using a watering can.
Davis concluded: "Lawns can be resilient, and even if they turn brown, the green, vibrant appearance can come back when normal weather returns."
