It should be performed in the Spring and Autumn periods and also as part of a complete renovation programme and especially after a period of drought.
The majority of lawns require deep solid tine aeration, and then hollow tining every 3 to 4 years to assist in thatch reduction.
Predominately, we aerate a lawn to :
Relieve surface compaction
To encourage new root growth
To increase rooting depth
Improve nutrient uptake
Reduce the build up of thatch below the surface
Improve the infiltration rate of water into the soil
Improve drainage
Improve gaseous exchange between the soil and atmosphere
Stimulate the soil borne microbes and their activity which are so important in creating a healthy soil