Lawn Care Schedule

Lawn Treatment Schedule

North: Zones 1, 5, 6

March

Rake up debris and leaves from winter.

April

Growing season starts. Mow grass 3 inches high. Leave clippings on lawn. Apply first dose of fertilizer. Treat for crabgrass with pre-emergent herbicide or eco-friendly corn gluten.

May

Pull or spot-treat dandelions or treat whole lawn with post-emergent weed control or lime. Fertilize six to eight weeks after first dose.

June–July

Water if rainfall is below 1 inch a week. Treat for grubs using beneficial nematodes.

Late August–September

Dethatch and aerate with core aerator when rains resume and ground softens. Fertilize and seed. Spread weed-and-feed over entire lawn or spot-spray with lime juice and vinegar.

October–November

Rake leaves. Fertilize six to eight weeks after last feeding. At final cut, after a few frosts, mow 2 inches high.

South: Zones 2, 3, 4

March

Growing season starts. Mow 3 inches high (1 to 2 inches for Bermuda grass). Leave clippings on lawn. Apply first dose of fertilizer. Treat for crabgrass with pre-emergent herbicide or corn gluten.

April

Plant seed. Dethatch and aerate.

May

Water if rainfall is below 1 inch a week. Fertilize six to eight weeks after first dose.

June–July

Treat for fungus, if necessary. Fertilize six to eight weeks after second dose.

Late August–September

Mow and water until grass turns brown. When grass greens up again, apply final dose of fertilizer.

October–November

Rake leaves. Continue mowing until grass stops growing.

Pro Advice: Roger Cook, This Old House Landscape Contractor says, “To find out how much water a sprinkler delivers in an hour, place empty coffee cans on the lawn and run the sprinkler for 15 minutes. Pour collected water into one can and measure its depth. Divide by the number of cans and multiply by 4 to get the inch-per-hour rate. Then you’ll know how long to water to make sure grass gets 1 inch a week, ½ to 1/3 inch at a time.”