Scarifying - Wellness for your lawn
Dead grass and parts of plants, weeds and moss turn into lawn thatch in the course of time and the lawn is starved of oxygen. Scarifying (lawn aeration) is the vertical cutting or scoring of the soil and the grass roots with special machines. Lawn thatch and moss as well as dead blades of grass are torn up from the ground. Air, water and nutrients thus penetrate down to the roots more effectively – the lawn is "aerated". Depending on the weather, the months between March and September are ideal to give your lawn a lifting (2x). The soil should be a little warmer by this time (over +10 °C). Warning: Hot spells can occur in spring and in autumn – do not scarify under such warmer conditions. Scarifying can also be performed in late summer, but with less intensity. The lawn can still make a good recovery and is then fortified for the winter break.
- Work under dry weather conditions.
- Mow normally before scarifying, not too short (2-3 cm).
- Test the depth setting of the lawn scarifier on an unproblematic area.
- Do not scarify too deeply the first time, just ‘comb’ the surface.
- The scarified material must be removed from the lawn area. Use a conventional rake or a special grass catcher box, in which you can collect the material as you scarify. A lawn mower with highlift blades can also be used to suck up the material. Warning: This is only recommended if the lawn surface is free from stones or none have been removed from the soil.
After scarifying, it is beneficial to perform sanding and fertilisation. Resowing is only necessary in the case of large bare patches. Although your lawn may not look too appealing for a while after scarifying, it will soon be back to looking its magnificent best. You'll begin to see results a short while after aeration.
Images↓Before scarifying: nutrients, water and air cannot penetrate into the soil.After scarifying: the soil can absorb nutrients again.