Hollow-tine aeration is the most effective way of relieving lawn compaction, by punching thousands of cores from the lawn. The operation relieves soil compaction within the root zone to promote deeper rooted grass and helps to thin out sub-surface thatch from the lawn.
Thatch is the matted layer, made up of living and dead organic matter, found between the grass plant leaf and the soil surface. Thatch (over 15mm or ½”) creates ideal conditions for moss and disease to thrive and, by reducing water, air and nutrients getting to the roots, it also prevents the grass plant from flourishing.
Compaction generally occurs when the lawn is walked on or a weight is exerted on it while its waterlogged. This squeezes the soil particles, reducing the movement of air and water, which in turn impacts on the root system of the grass plant.
We take a number of core samples from the lawn and measure the depth of the thatch. When the thatch layer is unacceptably deep or there is excessive compaction present, we recommend aeration as a solution.
In our experience, hollow-tine aeration is the most effective and rigorous form of lawn aerating. Spiking is not as effective.
There is no rule. GreenThumb carries out aeration when the lawn needs it. Many customers do, however, like to have their lawn aerated as part of their annual programme, alongside scarification, thereby ensuring the lawn remains healthy and able to thrive.