When to plant in Wooster, OH
USDA Zone 6aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Wooster, Ohio — all computed from Wooster's nearest NOAA weather station.
Zone 6a means Wooster sees real winter cold, but a good range of perennials survive; the frost dates above govern when annual vegetables go out.
The average first fall frost in Wooster is now 5 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
WOOSTER EXP STATION · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Wooster’s own odds, recorded at WOOSTER EXP STATION.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 28 | May 12 | Apr 26 | Sep 21 | Oct 3 | Oct 16 |
| 32°F | May 18 | Apr 30 | Apr 17 | Sep 29 | Oct 12 | Oct 26 |
| 28°F | May 5 | Apr 20 | Apr 5 | Oct 9 | Oct 24 | Nov 9 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Wooster, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 7 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Wooster planting FAQ
When is the last spring frost in Wooster, OH?
Wooster's average last spring frost falls near April 30 — the 50% mark at 32°F in the 1991–2020 normals. Hold tender transplants until the risk has passed, then plant out.
When is the first fall frost in Wooster, OH?
The first fall frost in Wooster typically arrives around October 12 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Wooster in?
Wooster is in USDA hardiness zone 6a. In zone 6a, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Wooster?
There are roughly 165 frost-free days in Wooster (a moderate growing season), running from the average last frost around April 30 to the first fall frost near October 12.
When should I plant tomatoes in Wooster?
In Wooster, start tomato seeds indoors around March 5–March 19, then transplant seedlings outdoors around May 7 once the danger of frost has passed.
Never miss a window in Wooster
An email when it’s time to start seeds, transplant, and sow — timed to Wooster’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at WOOSTER EXP STATION, 4 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Wooster, OH — Frost Dates & Zone 6a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00339312. Retrieved from https://blissgarden.com/ohio/wooster.