When to plant in Piqua, OH
USDA Zone 6aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Piqua, Ohio — all computed from Piqua's nearest NOAA weather station.
In zone 6a, Piqua gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
Frost probability
PIQUA WWTP · 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 Piqua’s own odds, recorded at PIQUA WWTP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 14 | Apr 29 | Apr 16 | Sep 30 | Oct 13 | Oct 25 |
| 32°F | May 5 | Apr 18 | Apr 5 | Oct 9 | Oct 23 | Nov 4 |
| 28°F | Apr 20 | Apr 5 | Mar 23 | Oct 20 | Nov 3 | Nov 18 |
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 Piqua, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 27 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.
Piqua planting FAQ
When is the last spring frost in Piqua, OH?
Piqua's average last spring frost falls near April 18 — 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 Piqua, OH?
Expect Piqua'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 Piqua in?
Piqua 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 Piqua?
Piqua has about 188 frost-free days — a moderate growing season — between the average last spring frost (April 18) and first fall frost (October 23).
When should I plant tomatoes in Piqua?
For Piqua, sow tomatoes indoors about February 21–March 7 and move the seedlings out around April 25, after the last spring frost.
Never miss a window in Piqua
An email when it’s time to start seeds, transplant, and sow — timed to Piqua’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Troy · 12 km
- Sidney · 17 km
- Tipp City · 21 km
- Vandalia · 30 km
- Clayton · 32 km
- Englewood · 32 km
- Greenville · 32 km
- Huber Heights · 34 km
Frost dates recorded at PIQUA WWTP, 2 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 Piqua, OH — Frost Dates & Zone 6a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00336650. Retrieved from https://blissgarden.com/ohio/piqua.