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Tennessee frost dates
Across the 12Tennessee weather stations below, the average last spring frost ranges from Mar 16 in Memphis to Apr 20 in Crossville 7 Nw. The statewide middle is about Apr 3 for the last spring frost and Nov 2 for the first fall frost. Memphis has the longest growing season, about 245 days. Hardiness zones in these places: 7a, 7b, 8a.
Frost dates by city
| Place | Zone | Last spring frost | 90% safe after | First fall frost | Frost-free days |
|---|---|---|---|---|---|
| Memphis | 8a | Mar 16 | Apr 4 | Nov 16 | 245 |
| Chattanooga Lovell | 8a | Mar 24 | Apr 8 | Nov 9 | 230 |
| Dyersburg Iii Golf | 7b | Mar 28 | Apr 15 | Nov 2 | 219 |
| Nashville | 7b | Mar 31 | Apr 16 | Nov 3 | 217 |
| Oak Ridge | 7b | Mar 31 | Apr 15 | Nov 4 | 218 |
| Knoxville Mcghee Tyson | 7b | Apr 1 | Apr 17 | Nov 2 | 215 |
| Jackson Mckellar | 7b | Apr 5 | Apr 21 | Oct 29 | 207 |
| Oak Ridge Atdd | 7b | Apr 5 | Apr 19 | Nov 1 | 210 |
| Clarksville Outlaw | 7b | Apr 6 | Apr 23 | Oct 28 | 205 |
| Bristol Tri | 7b | Apr 16 | May 5 | Oct 24 | 191 |
| Crossville | 7a | Apr 16 | May 5 | Oct 23 | 190 |
| Crossville 7 Nw | 7a | Apr 20 | May 9 | Oct 20 | 183 |
Dates are the 50% probability of a 32°F freeze (NOAA 1991–2020 normals); "90% safe after" is the date after which a later spring freeze happens in only 1 year in 10.
When to plant in Tennessee
Using the statewide middle dates (last frost Apr 3, first frost Nov 2). Adjust for your town with the table above or the planting calendar.
| Plant | When to plant in Tennessee |
|---|---|
| Tomatoes | Apr 10 – Apr 24 |
| Peas | Feb 20 – Mar 13; fall: Aug 10 – Aug 31 |
| Potatoes | Mar 6 – Mar 27 |
| Green beans | Apr 10 – Apr 24; fall: Aug 17 – Aug 31 |
| Garlic | Nov 2 – Nov 30 |
| Tulips | Oct 19 – Nov 30 |