Whether you love or hate maintaining your lawn, mowing is normally needed between March and October. Here are our tips on which factors affect your lawn and when is best to cut it.

When to cut grass

The Nature’s Calendar project tracks the effects of weather and climate change on wildlife across the UK – its records date all the way back to 1736! 

Recorders have been documenting when they first cut their lawn since 2000 - this is one of 69 different events monitored for the project. The average date recorded for lawn first cut year on year usually falls in March or early April. Volunteers also report if they have had to cut their lawn all winter.

These results indicate that on average you will probably need to start cutting your grass at some point during March - but it will depend on local conditions.

Visiting woods

Nature's Calendar

Timings in natural, seasonal events such as the arrival of migratory birds or leaves budding helps us understand the effects of climate change on wildlife. You can help us do it.

Explore Nature's Calendar

Ground conditions

You shouldn’t cut your lawn if the soil is soft or if there is a frost (or one due within 24 hours). Mowing in these conditions will damage turf and compact soil.

Other factors that affect grass growth in spring include your location in the UK and how shady your lawn is.

Why is the date of first cut grass important?

Grass is one of the earliest plants to start growing in spring, and one of the last to stop growing in the winter. Knowing whether grass is still growing or not tells us a lot about the length of the growing season.

The Met Office has estimated that the growing season has increased by at least a month and grass is growing all year round in some areas. This is an important indicator of the effects of climate change. If this is how grass responds, what impact is climate change having on other species? That's what Nature's Calendar is monitoring.

Tell us when you’ve cut yours

Join the thousands of people recording for Nature's Calendar and tell us when you first cut your lawn.

The data recorded helps us to better understand the effects of climate change and other patterns in the natural environment. By taking just a few minutes to share what you see, you'll be adding to hundreds of years' worth of important data. We couldn't do this work without you!

Spot the signs of the seasons

Let us know what's happening to animals and plants near you and help scientists track the effects of climate change on wildlife.

Explore Nature's Calendar

Explore more gardening tips and advice