North: Zones 1, 5, 6
Rake up debris and leaves from winter.
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.
Pull or spot-treat dandelions or treat whole lawn with post-emergent weed control or lime.
Fertilize six to eight weeks after first dose.
Water if rainfall is below 1 inch a week.
Treat for grubs using beneficial nematodes.
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.
Fertilize six to eight weeks after last feeding.
At final cut, after a few frosts, mow 2 inches high.