What is the difference between Power Raking and Dethatching?
Dethatching and power raking are both performed with the same machine. The difference in the two services is how deep the cutting knives are set on the power rake/dethatcher. Depending on the amount of thatch in your lawn, you may just need the surface raked out or for higher amounts of thatch we may need to go deeper to remove more.
What is thatch?
Thatch is a tightly intermingled layer of living and dead stems, leaves and roots which accumulates between the layer of actively-growing grass and the soil underneath. Thatch is a normal component of an actively growing turf grass. As long as the thatch is not too thick, it can increase the resilience of the turf to heavy traffic.
Thatch develops more readily on high-maintenance lawns than on low-maintenance lawns.
How does thatch effect turf quality?
An excessive thatch layer (more than 1 inch) can restrict the movement of air, water, fertilizer and other materials to the roots. This air- and water- impervious layer causes the grass to restrict rooting to the thatch layer to get air and water and, hence, reduces drought resistance in the turf. Furthermore, if the thatch dries out, it cannot be rewetted easily. Even if the thatch stays moist, it can harbor fungi which can cause turf diseases. When temperature and moisture conditions are right, a disease infestation can kill the already weakened turf.
Other recommended services to consider including with your power raking/ dethatching service: Aeration & Overseeding