When to plant in Smyrna, TN
USDA Zone 7bSmyrna, Tennessee frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
In zone 7b, Smyrna supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
Frost probability
SMYRNA 6S · 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 Smyrna’s own odds, recorded at SMYRNA 6S.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 15 | Apr 29 | Apr 11 | Sep 30 | Oct 12 | Oct 24 |
| 32°F | May 4 | Apr 13 | Mar 31 | Oct 8 | Oct 21 | Nov 2 |
| 28°F | Apr 15 | Apr 1 | Mar 18 | Oct 16 | Oct 30 | Nov 11 |
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 Smyrna, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 15 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.
Smyrna planting FAQ
When is the last spring frost in Smyrna, TN?
Plan for the last spring frost in Smyrna around April 13 (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 Smyrna, TN?
Expect Smyrna's first fall frost near October 21 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Smyrna in?
Smyrna 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 Smyrna?
Smyrna has about 191 frost-free days — a moderate growing season — between the average last spring frost (April 13) and first fall frost (October 21).
When should I plant tomatoes in Smyrna?
For Smyrna, sow tomatoes indoors about February 16–March 2 and move the seedlings out around April 20, after the last spring frost.
Never miss a window in Smyrna
An email when it’s time to start seeds, transplant, and sow — timed to Smyrna’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- La Vergne · 7 km
- Nolensville · 13 km
- Murfreesboro · 16 km
- Brentwood · 22 km
- Mount Juliet · 26 km
- Franklin · 30 km
- Lebanon · 30 km
- Nashville-Davidson · 32 km
Frost dates recorded at SMYRNA 6S, 7 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 Smyrna, TN — Frost Dates & Zone 7b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00408414. Retrieved from https://blissgarden.com/tennessee/smyrna.