Lawn Scarification

Lawn Scarification is the removal of dead organic matter (and moss) from the base of the grass plant to maintain a healthy growing environment above and below the soil surface often referred to as the thatch layer.
A certain level of thatch is beneficial to the lawn as it acts as a natural insulator, retaining moisture in hot, dry weather and keeping warmth in during cold weather. It is controlled to some degree by microbial action, however, sometimes the layer just gets too thick and becomes a problem for healthy plant growth.
Most gardeners only think about scarifying when they notice a problem on the lawn surface and that problem is usually the dreaded moss! Moss thrives in the wet environment provided by winter, but once the moss takes hold, it is almost too late.

What causes “thatch”

  • Regularly scarifying a lawn reduces the opportunities for the moss to set in.
  • Regularly cutting your lawn too low (30-40mm on a regular domestic lawn is the ideal) can make the thatch problem worse, as taking the top growth off encourages the plant to shoot sideways, leading to thicker growth.

Signs of “thatch”

  • Spongy lawn: you will notice when you walk over it, your feet may sink down into the lawn.
  • Mowing may become difficult as the lawn is clogged up with excess thatch.
  • Water drainage/soggy lawn: the lawn stays wetter on the surface
  • No result from fertilisers: the fertiliser may not be reaching the root zone so the desired effect will not be achieved
  • Poor colour
  • Pests: increase in pests such as leather jackets and Chafer grubs can sometimes be an indicator of poor conditions

Benefits of Scarification;

  • Encourages re-growth
  • Thickening of the lawn
  • Removes the organic matter from the surface of the lawn, helping it breathe.
  • Refreshes a lawn, helping to absorb water and nutrients much more easily.
  • Reduces moss levels in a lawn.
  • Stops it becoming ‘spongy’

Lawn scarification is one of the most beneficial treatments that you give to your lawn to encourage new thicker and healthier, greener grass.

Contact us now for a no obligation quote and we can instantly transform your garden exactly the way you want.




4 Seasons Lawn Care can also help you to achieve a beautiful lawn by applying scarification processes. Scarification can be applied to remove substantial grass patches and dead plant material otherwise known as thatch from your lawn to allow the grass roots to penetrate to the soil. Layers of thatch over 1 cm deep can hinder water and fertiliser penetration. Fungal lawn diseases can also breed in the moist humid conditions if the nutrients cannot reach the roots. Scarification to the lawn is only undertaken to resolve specific problems as routine procedures pose a danger to healthy grass plants.

When to book your lawn Scarification

Spring and early Autumn are the optimum times to scarify your lawn when the lawn is still growing.
To help recovery we recommend you add a lawn overseeding treatment treatment after scarification

Call us now to discuss how we can help you get a thicker, greener lawn.