When to plant in Gahanna, OH
USDA Zone 6bEverything below — frost dates, hardiness zone, and what to plant when in Gahanna, Ohio — is derived from the closest NOAA station with complete climate normals.
In zone 6b, Gahanna gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
Frost probability
COLUMBUS PORT COLUMBUS INTL 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 Gahanna’s own odds, recorded at COLUMBUS PORT COLUMBUS INTL AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 16 | Apr 29 | Apr 15 | Oct 5 | Oct 16 | Oct 28 |
| 32°F | May 5 | Apr 18 | Apr 4 | Oct 14 | Oct 27 | Nov 7 |
| 28°F | Apr 21 | Apr 5 | Mar 22 | Oct 26 | Nov 6 | Nov 21 |
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 Gahanna, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 13 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.
Gahanna planting FAQ
When is the last spring frost in Gahanna, OH?
Plan for the last spring frost in Gahanna around April 18 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in Gahanna, OH?
Expect Gahanna's first fall frost near October 27 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Gahanna in?
Gahanna 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 Gahanna?
Gahanna has about 192 frost-free days — a moderate growing season — between the average last spring frost (April 18) and first fall frost (October 27).
When should I plant tomatoes in Gahanna?
For Gahanna, 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 Gahanna
An email when it’s time to start seeds, transplant, and sow — timed to Gahanna’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Whitehall · 8 km
- Bexley · 9 km
- Westerville · 10 km
- New Albany · 11 km
- Columbus · 11 km
- Reynoldsburg · 11 km
- Worthington · 14 km
- Pataskala · 14 km
Frost dates recorded at COLUMBUS PORT COLUMBUS INTL AP, 5 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 Gahanna, OH — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00014821. Retrieved from https://blissgarden.com/ohio/gahanna.