Tennessee frost dates: B
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Bakewell | Apr 7 | Oct 29 | 205 d | 7b |
| Bath Springs | Apr 4 | Oct 30 | 209 d | 7b |
| Baxter | Apr 14 | Oct 25 | 194 d | 7b |
| Bean Station | Apr 10 | Oct 28 | 201 d | 7b |
| Beech Bluff | Apr 10 | Oct 25 | 198 d | 7b |
| Beechgrove | Apr 1 | Nov 2 | 215 d | 7b |
| Beersheba Springs | Apr 21 | Oct 20 | 182 d | 7a |
| Belfast | Apr 14 | Oct 22 | 191 d | 7b |
| Bell Buckle | Apr 14 | Oct 25 | 194 d | 7b |
| Bells | Mar 28 | Nov 4 | 221 d | 7b |
| Belvidere | Apr 6 | Oct 29 | 206 d | 7b |
| Benton | Apr 6 | Oct 30 | 207 d | 7b |
| Bethel Springs | Apr 6 | Oct 30 | 207 d | 7b |
| Bethpage | Apr 16 | Oct 23 | 190 d | 7b |
| Big Rock | Apr 4 | Oct 31 | 210 d | 7a |
| Big Sandy | Apr 8 | Oct 29 | 204 d | 7b |
| Birchwood | Apr 4 | Oct 31 | 210 d | 7b |
| Blaine | Apr 24 | Oct 17 | 176 d | 7b |
| Bloomington Springs | Apr 20 | Oct 22 | 185 d | 7b |
| Blountville | Apr 16 | Oct 24 | 191 d | 7b |
| Bluff City | Apr 19 | Oct 24 | 188 d | 7b |
| Bogota | Mar 28 | Nov 2 | 219 d | 7b |
| Bolivar | Apr 3 | Oct 30 | 210 d | 7b |
| Bon Aqua | Apr 7 | Oct 31 | 207 d | 7b |
| Braden | Mar 29 | Nov 3 | 219 d | 8a |
| Bradford | Apr 4 | Oct 28 | 207 d | 7b |
| Bradyville | Apr 17 | Oct 21 | 187 d | 7b |
| Brentwood | Apr 15 | Oct 26 | 194 d | 7b |
| Briceville | Mar 31 | Nov 4 | 218 d | 7a |
| Brighton | Mar 27 | Nov 4 | 222 d | 8a |
| Bristol | Apr 16 | Oct 24 | 191 d | 7a |
| Brownsville | Mar 29 | Nov 5 | 221 d | 8a |
| Bruceton | Apr 3 | Nov 1 | 212 d | 7b |
| Brunswick | Mar 29 | Nov 5 | 221 d | 8a |
| Brush Creek | Apr 10 | Oct 29 | 202 d | 7b |
| Buchanan | Apr 7 | Oct 31 | 207 d | 7b |
| Buena Vista | Apr 2 | Oct 31 | 212 d | 7b |
| Buffalo Valley | Apr 3 | Nov 4 | 215 d | 7b |
| Bulls Gap | Apr 14 | Oct 24 | 193 d | 7b |
| Bumpus Mills | Apr 4 | Oct 31 | 210 d | 7b |
| Burlison | Mar 27 | Nov 4 | 222 d | 8a |
| Burns | Apr 16 | Oct 26 | 193 d | 7b |
| Butler | Apr 18 | Oct 24 | 189 d | 7a |
| Bybee | Apr 7 | Oct 29 | 205 d | 7b |
| Byrdstown | Apr 12 | Oct 25 | 196 d | 7a |