When to plant in Columbia, TN
USDA Zone 7bColumbia, Tennessee frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
Zone 7b means many perennials and even some tender shrubs overwinter in Columbia, while your frost dates still decide when annuals go out.
Frost probability
COLUMBIA 3 WNW · 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 Columbia’s own odds, recorded at COLUMBIA 3 WNW.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 7 | Apr 23 | Apr 8 | Oct 6 | Oct 18 | Oct 30 |
| 32°F | Apr 26 | Apr 10 | Mar 26 | Oct 16 | Oct 27 | Nov 7 |
| 28°F | Apr 14 | Mar 29 | Mar 8 | Oct 23 | Nov 5 | 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 Columbia, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 16 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.
Columbia planting FAQ
When is the last spring frost in Columbia, TN?
Columbia's average last spring frost falls near April 10 — 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 Columbia, TN?
The first fall frost in Columbia typically arrives around October 27 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Columbia in?
Columbia is in USDA hardiness zone 7b. In zone 7b, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Columbia?
There are roughly 200 frost-free days in Columbia (a moderate growing season), running from the average last frost around April 10 to the first fall frost near October 27.
When should I plant tomatoes in Columbia?
In Columbia, start tomato seeds indoors around February 13–February 27, then transplant seedlings outdoors around April 17 once the danger of frost has passed.
Never miss a window in Columbia
An email when it’s time to start seeds, transplant, and sow — timed to Columbia’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Spring Hill · 18 km
- Lewisburg · 30 km
- Franklin · 36 km
- Fairview · 40 km
- Brentwood · 48 km
- Lawrenceburg · 49 km
- Nolensville · 50 km
- Shelbyville · 55 km
Frost dates recorded at COLUMBIA 3 WNW, 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 Columbia, TN — Frost Dates & Zone 7b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00401957. Retrieved from https://blissgarden.com/tennessee/columbia.