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
Continue at Premium Grass Seeds
Build the fall window before it opens.
Use the calendar for timing, then move through the three buying decisions in order. Start with the zone-filtered seed comparison, then use the matching starter and equipment guides. The seed comparison stays anchored to Zone 7b.
1 · Seed
Compare zone-fit fall seed
Start with overseeding options that list this zone, then confirm the local establishment window.
Open: Compare zone-fit fall seed → (opens in a new tab)2 · Starter
Pair the starter fertilizer
Pick the establishment feed after the seed; it is not a substitute for it.
Open: Pair the starter fertilizer → (opens in a new tab)3 · Equipment
Stage the overseeding tools
Choose the spreader, prep, and watering gear before the window opens.
Open: Stage the overseeding tools → (opens in a new tab)
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