Zone 7a Club · Lawn Calendar
Zone 7a Lawn Calendar
Year-round timing tuned to Zone 7a's climate window.
Winter low
0°F
Last frost
Apr 10
First frost
Oct 25
Season
200d
Primary Overseeding Window
Sep 10 → Oct 20
The single highest-leverage window for cool-season seed in Zone 7a.
Quarter
Spring in Zone 7a
- ▪Early April: pre-emergent crabgrass at soil temp 55°F
- ▪First mow at 4 inches; maintain 4 inches for heat resilience
- ▪0.75 lb N/1000 sqft mid-April
- ▪Spot-overseed thin areas with TTTF
Quarter
Summer in Zone 7a
- ▪Mow at 4 inches
- ▪1.5–2" water per week; deep + infrequent; early-morning only
- ▪No June–August N on TTTF (brown patch trigger)
- ▪Brown patch + Pythium watch — fungicide rotation for showcase
Quarter
Fall in Zone 7a
- ▪Primary overseeding window: Sep 10 – Oct 20
- ▪1 lb N/1000 sqft early-mid September
- ▪Aerate + overseed
- ▪Final mow at 3 inches late November
Quarter
Winter in Zone 7a
- ▪Limited dormancy — green most of winter in mild years
- ▪Light freeze-thaw cycles
- ▪Plan spring buys in January
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