Spring
- De thatch lawn & clean up seasonal debris
- Aerate & overseed
- Mow at 3 inches or higher
- Forsythia bloom means time for crabgrass or broadleaf pre emergent
- Around 2nd mow apply slow release nitrogen fertilizer
- Aerate when soil moisture levels are adequate, at the rate of 15-20 cores per sq ft
- Seed in late April/early May
Summer
- Water lawn, about 1 inch per week required to maintain green color and active growth
- Do not remove more than one third the grass height each time you mow
- Fertilizer should be applied to watered lawns at the rate of less than 1 pound of nitrogen per 1000 sq ft
- Treat with insecticide for white grubs if damage is significant
- Late August is ideal to prep for seeding or herbicide application
Fall
- September is ideal for establishing a new lawn in Wisconsin
- Late August into September is ideal to renovate lawns with power raking and slit seeding
- Sept 1-15 slow release nitrogen fertilizer
- Early to mid fall is ideal for broadleaf weed control applications
- Core aerating
- Clean leaves and debris & mow grass shorter in preparation for winter