When to plant in Forest Park, OH
USDA Zone 6bForest Park, Ohio frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
In zone 6b, Forest Park gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
Frost probability
HAMILTON BUTLER CO RGNL AP · 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 Forest Park’s own odds, recorded at HAMILTON BUTLER CO RGNL AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 19 | May 2 | Apr 18 | Sep 25 | Oct 7 | Oct 20 |
| 32°F | May 10 | Apr 22 | Apr 6 | Oct 5 | Oct 18 | Oct 29 |
| 28°F | Apr 28 | Apr 8 | Mar 26 | Oct 15 | Oct 27 | Nov 8 |
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 Forest Park, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 17 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.
Forest Park planting FAQ
When is the last spring frost in Forest Park, OH?
Forest Park's average last spring frost falls near April 22 — 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 Forest Park, OH?
The first fall frost in Forest Park typically arrives around October 18 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Forest Park in?
Forest Park 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 Forest Park?
Forest Park has about 179 frost-free days — a moderate growing season — between the average last spring frost (April 22) and first fall frost (October 18).
When should I plant tomatoes in Forest Park?
For Forest Park, sow tomatoes indoors about February 25–March 11 and move the seedlings out around April 29, after the last spring frost.
Never miss a window in Forest Park
An email when it’s time to start seeds, transplant, and sow — timed to Forest Park’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Springdale · 4 km
- Fairfield · 5 km
- Northbrook · 6 km
- Finneytown · 8 km
- Sharonville · 10 km
- Reading · 11 km
- White Oak · 11 km
- Hamilton · 12 km
Frost dates recorded at HAMILTON BUTLER CO RGNL AP, 9 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 Forest Park, OH — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00053855. Retrieved from https://blissgarden.com/ohio/forest-park.