Lawn guide
The first mow: when and how to cut new turf
The first cut is a small milestone for a new lawn. Done at the right time and the right height, it helps the grass thicken. Done too early or too low, it can lift rolls or scalp the turf.
When it's ready
Most new turf is ready for its first mow two to three weeks after laying, a little sooner in warm, growing weather and later in cool months. Try lifting a corner of a roll gently. When it holds firm, with roots gripping the soil underneath, it's ready.
How to do the first cut
Let the surface dry
Mow when the grass is dry and the soil isn't soggy, ideally the day after watering.
Set the mower high
Use the highest setting, or close to it. Take off only the top third of the grass.
Check the blades
Sharp blades cut cleanly; blunt ones tear and can pull the turf.
Mow gently
Push slowly and turn on a path or patio rather than on the turf where you can.
Collect the clippings
Use the grass box for the first few cuts so clippings don't sit on the young lawn.
The next few weeks
Mow once a week in the growing season, lowering the height a notch at a time over several cuts until you reach your usual setting. Keep watering in dry spells. After about six weeks, your lawn can be treated like any established lawn.
How short should a lawn be?
For a hard-wearing family lawn, around 3 to 4 cm in summer is a good height, a little longer in shade and in spring and autumn.
Which mower?
A lightweight rotary or cylinder mower is kindest to new turf. Avoid heavy petrol mowers and ride-ons for the first few cuts. Our guide to the best lawnmowers for new turf goes through the options.
Common questions
What if the grass gets long before it's rooted?
Wait until it's rooted, then take a little off at the highest setting. Cutting it too short in one go stresses the grass.
Can I use a strimmer on the edges?
Yes, carefully, once the turf has rooted. Edging shears are gentler for the first few weeks.