When to plant in Fostoria, OH
USDA Zone 6bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Fostoria, Ohio — all computed from Fostoria's nearest NOAA weather station.
Heads up: the nearest complete-normals station is about 21 km from Fostoria, so your yard's frost dates can differ — a low spot or a paved city center can shift them by a week. Zone 6b means Fostoria 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 Fostoria is now 5 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
TIFFIN · 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 Fostoria’s own odds, recorded at TIFFIN.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 17 | May 2 | Apr 18 | Sep 30 | Oct 11 | Oct 24 |
| 32°F | May 7 | Apr 23 | Apr 8 | Oct 9 | Oct 23 | Nov 5 |
| 28°F | Apr 26 | Apr 11 | Mar 28 | Oct 21 | Nov 3 | Nov 19 |
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 Fostoria, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 26 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.
Fostoria planting FAQ
When is the last spring frost in Fostoria, OH?
On average, the last spring frost in Fostoria is around April 23 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in Fostoria, OH?
Expect Fostoria's first fall frost near October 23 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Fostoria in?
Fostoria is in USDA hardiness zone 6b. In zone 6b, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Fostoria?
There are roughly 183 frost-free days in Fostoria (a moderate growing season), running from the average last frost around April 23 to the first fall frost near October 23.
When should I plant tomatoes in Fostoria?
In Fostoria, start tomato seeds indoors around February 26–March 12, then transplant seedlings outdoors around April 30 once the danger of frost has passed.
Never miss a window in Fostoria
An email when it’s time to start seeds, transplant, and sow — timed to Fostoria’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Tiffin · 20 km
- Findlay · 23 km
- Bowling Green · 31 km
- Fremont · 33 km
- Perrysburg · 46 km
- Maumee · 50 km
- Bucyrus · 54 km
- Oregon · 55 km
Frost dates recorded at TIFFIN, 21 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 Fostoria, OH — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00338313. Retrieved from https://blissgarden.com/ohio/fostoria.