Scarification is a very important part of keeping your lawn in a good condition. It is a mechanical rake-like process which removes thatch from the surface of your lawn. Thatch is a build up layer of surface and sub-surface dead grass, grass clippings and moss that can accumulate over many years.
A build-up of thatch and moss can becoming damaging to a lawn by preventing water, air and nutrients from reaching the soil and root zone. As a result lawns will suffer by becoming thin, patchy and let stress tolerant. Removing the layer of organic matter from your lawn encourages a healthier and more resilient grass growth as well as a denser sward.
The optimum time of year to carry out scarification or general lawn renovation is during the autumn months from mid August to October. This is because the soil is warm and autumn moisture will assist natural recovery and seed germination as you go into the winter.
Spring can also be a good time for a light scarify or de-thatch but we advise against heavy scarification in the spring as cool soil temperatures and dry weather can hamper recovery as you go into the summer.
As a general rule we advise scarification at least every other year.
At Will’s Norfolk Lawns we use professional scarifiers with adjustable rotating reel blades. They cut vertically through the living material to remove surface thatch, which is not normally affected by horizontal mowing. We will usually complete two “passes” of your lawn (scarifying in two different directions), before collecting the debris using backpack blowers and rakes.