Lawn scarification in the UK is done in Autumn or Spring, about every two to three years in a garden, to get rid of \u201cthatch<\/strong>\u201c. Thatch is spongy, and soaks up a lot of water without letting it reach the soil, but it can\u2019t hold water like deep soil can, so it tends to make your lawn dry out in Summer.
Lawn thatch consists of living grass roots, the woodiest parts of dead grass, and usually moss, all piled in a layer covering the actual soil.<\/p>\n
Deep thatch prevents air circulating, harbours pests, and creates areas that get churned up if people walk on them in wet weather, then go bald in dry weather.<\/p>\n