The results so far of replacing the lawn at Oak Hill:
Nothing short of totally burning off the old grass, crabgrass, and weeds and covering with two inches of topsoil will work to suppress the reemergence of crabgrass and weeds to some degree as the new lawn comes in. Simply scorching crabgrass seedlings works to kill them, but this is not effective on older, established crabgrass, which seems to be reemerging regardless of how deeply it's buried if it wasn't totally burned. I have yet to understand how crabgrass is called an annual, when it seems to survive through our winters here.
At the front of the cottage using the burn and bury method, the new lawn has come in weed-free except near the porch and daffodil beds where it couldn't be totally burned off. The hillside to the east was only partially burned and scorched selectively, and less topsoil was added. The result has not been nearly as good.
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