Zone 7b Club · Lawn Calendar
Zone 7b Lawn Calendar
Year-round timing tuned to Zone 7b's climate window.
Winter low
5°F
Last frost
Apr 1
First frost
Nov 1
Season
215d
Primary Overseeding Window
Sep 15 → Oct 25
The single highest-leverage window for cool-season seed in Zone 7b.
Quarter
Spring in Zone 7b
- ▪Late March–early April: pre-emergent at soil temp 55°F (early in 7b)
- ▪First mow at 4 inches; maintain 4 inches
- ▪0.75 lb N/1000 sqft early April
- ▪Spot-overseed with TTTF
Quarter
Summer in Zone 7b
- ▪Mow at 4 inches
- ▪2" water per week; deep + infrequent; early-morning only
- ▪Zero summer N on TTTF
- ▪Brown patch + Pythium control — fungicide rotation expected
Quarter
Fall in Zone 7b
- ▪Primary overseeding window: Sep 15 – Oct 25
- ▪1 lb N/1000 sqft mid-late September
- ▪Aerate + overseed
- ▪Final mow at 3 inches late November
Quarter
Winter in Zone 7b
- ▪Minimal dormancy — green most weeks
- ▪Light freeze-thaw
- ▪Plan spring January
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