The key to a successful organic lawn program is the soil. It
must be alive with wide variety of beneficial microorganisms and bugs.
Beneficial microbes both feed and protect the plants from disease-causing
microbes. All the organic gardener does is feed the beneficial microbes and let
them do their work.
Beneficial microorganisms include bacteria and fungi found
in finished compost. There are two ways to get the microbial benefit from
compost. The best way to get a complete dose of beneficial microbes is by
including finished compost in the soil preparation before laying seed or sod.
Preparing the ground right beforehand is preferred to applying after the grass
is established. Plans for a new lawn should specify that compost be mixed with
the top 4 inches of topsoil, half-and half, when the land is renovated for grass
seed or sod planting. This ensures that the microbes will be in the root zone
as the grass seed germinates. However, if your lawn is already established and
you want to go organic, you can add compost to the lawn as a top dressing. This
means physically dropping compost on top of the turf and then sweeping it off
the grass plants and onto the soil where the microbes will be washed into the
soil. A careful watering of the lawn after the application of compost will
hasten this process. Care must be taken to avoid topping with too much compost.
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