Most lawn care companies do not offer dethatching. Dethatching is
time consuming and can produce as much as two pick-up truck loads
of thatch. The method of collecting the thatch involves hand held
rakes and tarps a labor intensive exercise.
Thatch as defined by Dr. James B. Beard is “a tightly
intermingled layer of dead and living stems and roots that
develops between the zone of green vegetation and the soil
surface.”
To remove thatch from a lawn requires a dethatcher or power rake,
depending on the thickness of the thatch, between 2 - 5 passes
with the machine and raking up the removed thatch between passes.
The cost of having dethatching done by a company can run between
$65- $145 per 1000 sq ft. depending on the thickness of the
thatch.
So if you had a moderate amount of thatch in a 5000 sq ft lawn
your cost would be around $500.
If that seems like a lot, well it is. One thing you can do to help
is to
Aerate
every fall which will help air and water to penetrate the
thatch making things easier for microbes to decompose
the thatch. Another tip water heavily and deeply once a week
- Watering frequently promotes surface root growth building up
your thatch layer.
A normal amount of thatch between 1/8" - 1/4"
is preferred - Anything more should be removed as it is not
letting water air and nutrients penetrate into the soil.
If you feel your lawn needs dethatching you can rent a dethatcher
and do the work yourself or call on the professionals. In
Montgomery County MD
Seneca
Gardens can help.