Summer can be tough on lawns.

Heat, dry soil and increased usage can quickly turn a lush lawn into something patchy, yellow or stressed.

But with the right approach, your lawn can stay thick, green and healthy throughout the warmer months.

Here’s how to manage mowing, watering, fertilising and lawn recovery during summer.

1. Mow Correctly in Summer

Regular mowing encourages grass to thicken and spread.

But in summer, mowing technique matters more than frequency.

Follow these rules:

• Never remove more than one third of the grass height

• Keep blades slightly higher than spring

• Avoid mowing during extreme heat or drought

Longer grass provides shade to the soil, which helps retain moisture and protects roots.

During drought conditions, mowing every 10–14 days is often sufficient.

Bonus tip

If your lawn is newly established (under 8 weeks old), regular mowing actually helps it thicken faster.

2. Water Deeply - Not Frequently

Many lawn owners make the mistake of watering too often.

Frequent shallow watering creates weak, shallow roots.

Instead:

Water heavily every few days so moisture reaches deeper into the soil.

This encourages deeper root growth and improves drought resistance.

Ideal watering schedule

• Established lawns: every 2-4 days during dry weather

• Deep soak rather than light sprinkling

3. Water at the Right Time

Timing matters.

The best time to water your lawn is early morning.

This allows water to soak into the soil before heat causes evaporation.

Watering in the middle of the day wastes water.

Late evening watering can increase the risk of lawn disease.

4. Watering Newly Seeded Lawns

Newly seeded lawns require different care.

For the first 21 days, grass seed must remain consistently moist to germinate.

During hot summer weather this may require watering:

• Twice per day

• Up to three times during heatwaves

Make sure the top few inches of soil remain moist, not just the surface.

Warm summer soil temperatures actually promote faster germination and establishment.

5. Use Summer Fertiliser

Grass has different nutrient requirements throughout the year.

During spring and summer, lawns require higher nitrogen levels to support healthy green growth.

Look for a fertiliser with:

• Balanced slow-release nitrogen

• Moderate phosphorus and potassium

• Long-lasting granular application

A typical summer fertiliser might have an NPK ratio around 22-5-10.

Granular fertilisers are ideal because they release nutrients slowly over several weeks.

6. Biostimulants Can Improve Drought Resistance

Biostimulants help grass plants absorb nutrients more efficiently.

They work below the surface by encouraging stronger root growth and improved nutrient uptake.

This helps lawns become more resilient to drought stress and summer heat.

When used alongside fertiliser, they can significantly improve overall lawn health.

7. Consider Wetting Agents During Dry Weather

Dry patches are common in summer, especially on compacted or sandy soils.

Wetting agents help water penetrate the soil more effectively and prevent hydrophobic soil conditions.

Benefits include:

• Improved moisture penetration

• Reduced dry patch formation

• Better water retention

This means your lawn stays greener even during dry spells.

8. Control Weeds and Moss

Summer conditions also encourage weed growth.

Weeds compete with grass for nutrients, water and sunlight.

Removing weeds early prevents them spreading further across your lawn.

If moss is present, apply iron sulphate treatment before any renovation work.

Once moss dies, it can be raked out to improve soil contact for new grass seed.

9. Can You Renovate a Lawn in Summer?

Spring and autumn are usually the best times for major lawn renovation.

However, summer renovations can still be successful.

In fact, summer offers some advantages:

• Soil temperatures are warm

• Germination is fast

• Growth is rapid

The key challenge is consistent watering.

If you can keep the soil moist, summer seeding can establish very quickly.

10. Why Lawns Turn Brown in Summer

You may notice lawns turning yellow or brown during prolonged heat.

This doesn’t necessarily mean the grass is dead.

Grass often enters dormancy as a natural defence mechanism during drought conditions.

When moisture returns, the lawn usually recovers.

However, prolonged drought may leave weaker areas that require overseeding.

11. Repairing Summer Lawn Damage

After extreme heat or drought, your lawn may need some recovery work.

Typical steps include:

1. Scarify lightly

2. Overseed thin areas

3. Apply seasonal fertiliser

4. Water consistently

With the right conditions, most lawns recover quickly.

12. Improving Summer Lawn Care Results

Once weeds, moss or pests have been dealt with, applying a structured lawn care plan can dramatically improve results.

Our Lawn Pack includes:

✔ Premium grass seed
✔ Seasonal fertiliser
✔ Simple step-by-step guide

Everything is measured specifically for your lawn to deliver thick, green growth.

👉 Start My Lawn Plan →

If your lawn has large bare areas, the Lawn Pack Plus provides additional coverage for bigger repairs.

FAQs

How often should you mow a lawn in summer?
Typically every 7–14 days depending on growth conditions.

Is it OK to fertilise a lawn in summer?
Yes, but use a balanced summer fertiliser with controlled nitrogen release.

Can grass recover after turning brown in summer?
Yes, most lawns recover once rainfall returns.

Should you seed grass in summer?
Yes, if you can water consistently.