Water Immediately
The moment turf is laid, it needs water. Don't wait until the entire lawn is finished — water each section as you complete it, especially in warm or windy weather. Turf starts drying out from the second it's unrolled, and the edges are the first to suffer.
Give the first watering a proper soak. You want water to penetrate through the turf and into the soil beneath — not just dampen the grass blades. A quick sprinkle with a watering can won't cut it.
The Watering Schedule
Week 1: Daily, Generously
Water every day for the first week. The soil beneath the turf should be consistently moist — not waterlogged, but damp enough that when you lift a corner, the soil feels wet to the touch.
In hot summer weather or exposed windy sites, you'll likely need to water twice daily — early morning and early evening. Turf can dry out alarmingly fast in direct sun and wind.
Week 2: Daily, Monitoring
Continue daily watering through week two. By now the turf should be starting to root — you can check with the tug test (see our rooting guide). If rooting is progressing well and conditions aren't extreme, you may be able to drop to once daily even in summer.
Weeks 3–4: Every Other Day
As roots establish, you can start to ease off. Every other day is usually sufficient, though you should still check by lifting a corner. If the soil beneath is drying out between waterings, go back to daily.
After Week 4: As Needed
By four weeks, your turf should be reasonably well rooted and you can transition to watering only when the lawn needs it. Signs it needs water: the grass takes on a slightly blue-grey tinge, footprints stay visible after you walk across it, or the soil feels dry when you push a finger in.
How Much Water Per Session?
A good soaking means the water has penetrated to the soil beneath the turf — typically the top 50–100mm of ground. For most people using a garden sprinkler, this means running it for roughly 20–30 minutes per zone.
The exact time depends on your water pressure, sprinkler type, and soil. The reliable test is always the same: lift a corner of the turf and check. If the soil underneath is moist, you've watered enough. If it's dry, keep going.
When to Water
Best Times
Early morning (before 9am) or early evening (after 5pm) are ideal. The air is cooler, wind is usually lighter, and less water is lost to evaporation. Early morning is marginally better because the grass dries during the day, which reduces the risk of fungal disease.
Worst Time
Midday in full sun. Much of the water evaporates before it reaches the soil, so you use more water for less benefit. It's a common myth that water droplets act as tiny magnifying glasses and scorch the grass — they don't — but midday watering is still wasteful.
Signs You're Underwatering
Underwatering is the most common problem with new turf. Watch for:
- Turf edges curling upward — the edges dry out first and shrink
- Gaps appearing between rolls — shrinkage from drying
- Yellow or brown patches — stressed turf losing colour
- Turf feels crispy or papery when you touch it
- Soil beneath the turf is dry when you lift a corner
If you spot these signs, increase watering immediately. Most new turf recovers well if you catch it early. Our guide on new turf turning yellow covers what to do if patches have already discoloured.
Signs You're Overwatering
Yes, you can overwater new turf. It's less common than underwatering, but it happens — particularly on heavy clay soils that drain slowly or in cooler weather when evaporation is low.
- Ground feels squelchy when you walk near the edge
- Water sitting on the surface that doesn't drain away
- Turf turning yellow-green and feeling slimy
- Mushrooms appearing in the first couple of weeks
If you're overwatering, simply back off and let the soil drain. Skip a day of watering and reassess. On clay soils, you may need shorter, more frequent watering sessions rather than long soaks.
Sprinklers vs Hand Watering
For anything larger than a few square metres, a sprinkler is far more practical than hand watering. An oscillating sprinkler covers a rectangular area well and delivers water more evenly than a hose.
Set up your sprinkler, time how long it takes to properly soak the area (check with the corner-lift test), and then repeat that timing each session. Consistency matters more than anything.
For large lawns, you may need to move the sprinkler to cover different zones. Make sure zones overlap slightly so no strips get missed.
Seasonal Adjustments
Spring/Autumn: Daily watering for two weeks is usually sufficient. Rainfall often helps. Check the forecast — if steady rain is due, you can skip a session.
Summer: Twice daily for the first week is common, especially in southern England. The combination of heat, sun, and wind can dry turf out in hours. Turf delivery in London, Brighton, and other southern areas during summer means committing to a serious watering schedule.
Winter: Less watering is needed as evaporation is low and rainfall is frequent. You may only need to water every few days, but still check the soil — winter winds can dry the surface out.
The Key Principle
Forget timers and schedules if they're not working. The only test that matters is lifting a corner and checking the soil. If it's moist, you're fine. If it's dry, water more. Everything else is a guideline — the soil tells you the truth.