How to Recover Your Lawn After Drought: Gardenio’s Practical Guide

After weeks of hot, dry weather, your lawn may look less like Wimbledon and more like a very large digestive biscuit.

The good news is that brown grass is not necessarily dead. Established lawns often become dormant during drought to conserve energy and can turn green again once cooler, wetter weather returns. Before ordering an entirely new lawn, give the existing one a chance to recover.

Water as Soon as You Can

Once restrictions allow—or with a watering can where permitted—give the lawn a proper drink. Deep, occasional watering is more useful than a quick daily sprinkle, which may only wet the surface and encourage shallow roots.

Water early in the morning or later in the evening, when less moisture will evaporate. Try to cover the lawn evenly rather than repeatedly watering the easiest corner because it happens to be closest to the kitchen.

For a very large lawn, using a watering can is technically possible, although you may complete several thousand steps and develop one unusually strong arm.

Always check the current water restrictions in your area. During the Thames Water hosepipe ban, watering cans can still be used, but hosepipes and sprinklers generally cannot unless an exemption applies.

When the lawn needs saving, every drop—and every dance move—counts.

Give It Time to Wake Up

Once rain or regular watering returns, wait and watch. Dormant grass may begin producing fresh green growth within a couple of weeks, although badly damaged areas can take longer.

Avoid heavy use while the lawn is recovering. Football matches, garden parties and repeatedly walking across the same route will not help stressed grass rebuild its strength.

Day three: one green shoot spotted. Tea prepared. Recovery officially under observation.

Don’t Mow It Immediately

If the grass is still brown and has stopped growing, leave the mower in the shed. There is little benefit in cutting grass that is already doing an excellent impression of straw.

When green growth resumes, mow using a higher blade setting. Never remove more than around one-third of the grass height in a single cut. Longer grass shades the soil, retains more moisture and develops stronger roots.

Step away from the mower. The lawn is sleeping, not asking for a haircut.

Rake Out the Dead Material

Once the soil is moist and the grass is actively growing again, gently rake away loose, dead material using a spring-tined lawn rake.

For a small lawn, a hand rake should be sufficient. A powered scarifier can save considerable time on a larger area, although the lawn may look temporarily worse afterwards. This is normal. Lawn renovation often has an unfortunate “it gets worse before it gets better” stage.

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Nobody warns you that scarifying a lawn may produce enough hay to adopt a small horse.

Aerate Compacted Soil

Hard, compacted soil prevents water and air from reaching the grass roots. Spike compacted areas with a garden fork, ideally creating holes around 10–15cm apart.

Push the fork into the soil and gently move it backwards and forwards to open the holes. Concentrate on areas receiving the most foot traffic.

It is not the most glamorous gardening job, but neither is looking at a rectangular brown patch until next spring.

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Overseed Bare Patches

If some areas remain bare after the rest of the lawn begins recovering, autumn is an ideal time to overseed because the soil is still warm while conditions are cooler and usually wetter.

Loosen the soil surface, remove dead grass and sow a lawn-seed mixture suited to the conditions. Consider drought-tolerant seed for sunny lawns, shade-tolerant seed beneath trees or a hard-wearing mixture for family gardens.

Keep the newly seeded soil consistently moist until the grass becomes established.

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Be Careful With Fertiliser

Do not rush to feed severely drought-stressed grass. Fertiliser will not magically turn a dormant lawn green and can cause further damage when applied in hot, dry conditions.

The RHS advises avoiding fertiliser and lawn weedkiller on drought-affected turf in autumn, delaying treatment until the following spring if necessary. Concentrate first on moisture, aeration and repairing bare patches.

Help Your Lawn Cope Better Next Time

You cannot control the weather, but you can make your lawn more resilient:

• Avoid mowing it extremely short

• Aerate compacted areas periodically

• Scarify excessive thatch

• Allow fine grass clippings to fall back during dry periods

• Choose drought-tolerant seed when repairing bare patches

• Consider allowing part of the lawn to grow longer

A perfect green lawn throughout every heatwave may not be realistic—or particularly environmentally friendly. Sometimes the sensible option is to let established grass rest, accept its temporary biscuit phase and wait for British rain to remember where London is.

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