3B
Zone 3B Lawn Calendar
Monthly seeding windows, overseeding periods, and fertilizing schedules for cold continental Zone 3B.
23 counties · 3 states · -35° to -30°F
Monthly Activity Timeline
January
winter
Maintenance
February
winter
Maintenance
March
spring
Maintenance
April
spring
Maintenance
MayNow
spring
Cool-season seeding
Spring fertilize
June
summer
Cool-season seeding
July
summer
Maintenance
August
summer
Fall seeding
September
fall
Fall fertilize
October
fall
Maintenance
November
fall
Maintenance
December
winter
Maintenance
Legend
Cool-season seeding
Fall seeding
Warm-season seeding
Overseeding
Spring fertilize
Fall fertilize