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said.
You can find out how much fertilizer — which generally contains nitrogen, potassium and phosophorous — to apply to your lawn by having a soil test done. Your local Extension agent can provide the details on soil testing in Virginia, Mr. Hall said.
Some lawns also may need lime, depending on the results of such a test.
Fall is also the right time to reseed your lawn if it needs it, Mr. Hall said.
“You get better moisture patterns in the fall than in the spring,” he said, “and you don’t have such a crabgrass problem. It also fits in well with your fertilization scheme — you can stimulate the new grass while you’re strengthening the root systems of existing grass.”
Mr. Hall recommends reseeding anytime between Aug. 15 and Oct. 1 with a grass that matches the one in your lawn. The most common types in Virginia are tall fescue, bluegrass and bermudagrass, depending on the region.
Again, the local Extension agent can help you determine what kind of grass you have and which varieties would be best for reseeding.
Finally, don’t be too hasty in putting away your lawn mower, Mr. Hall said. You don’t want to go into the winter with grass any higher than three inches.
“Long grass creates a canopy of disease,” he said. “It prevents air movement and traps moisture near the ground, providing what we call an inoculation chamber for winter turf disease.”
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