Scarification is the name given to the process where you remove excess thatch and moss from your lawn to encourage it to grow and look healthy. Although it sounds difficult, it’s actually pretty easy – simply grab a sturdy rake and apply moderate pressure to rake out moss, thatch and dead grass. Then collect it up and add to your compost heap if you have one. You can also use a petrol or electric rake, but you just want to tease out the moss and thatch. Don’t be tempted to go deep into the grass, as this could damage your lawn. So when should you scarify your lawn? The experts say that the best time is in the autumn, when the grass is actively growing and it’s not too hot, cold or dry. Most of summer’s weed seeds will have gone, so you won’t encourage weeds to grow in the raked-up soil. This soil also makes an ideal seed bed for over seeding with new grass seed, so that’s why you don’t want to get weeds in there as well. However, you may also carry out light scarification in the spring – usually around April. Make sure you don’t go too far though – as you will end up with a rather disfigured lawn if you scarify too heavily and the dryness of summer stops the lawn from recovering. It’s also best to scarify your lawn in the spring if the following apply:
- If you couldn’t do it the previous autumn – if you keep putting it off, you might end up with extreme moss and weed growth
- If your lawn is shaded – these areas will thin over winter and start to thicken from spring onwards, so if you scarify in the autumn you’ll make your lawn even thinner.
- If your lawn is under trees – pair the shade from the trees with the fall of leaves in the autumn and your grass won’t be healthy, but in the spring the trees are bare, allowing lots of light onto your lawn to help it grow.