| ZONE 1 | BELOW -50F | Sow seed in early spring when soil can be worked |
| ZONE 2 | -50F to -40F | Sow seed in early spring when soil can be worked |
| ZONE 3 | -40F to -30F | Spring: April 15-June 15 -- Fall: August 15-October 1 |
| ZONE 4 | -30F to -20F | Spring: April 15-June 15 -- Fall: September 1-October 15 |
| ZONE 5 | -20F to -10F | Spring: April 15-June 15 -- Fall: September 1-October 15 |
| ZONE 6 | -10F to 0F | Spring: March 15-May 15 -- Fall: September 15-November 1 |
| ZONE 7 | 0F to 10F | Spring: February 15-April 15 -- Fall: September 15-November 15 |
| ZONE 8 | 10F to 20F | Spring: January 15-March 1 -- Fall: October 1-December 1 |
| ZONE 9 | 20F to 30F | Spring: January 1-March 1 -- Fall: Ocober 1-December 1 |
| ZONE 10 | 30F to 40F | Spring: January 1-March 1 -- Fall: Ocober 1-December 1 |
| ZONE 11 | ABOVE 40F | Spring: January 1-March 1 -- Fall: Ocober 1-December 1 |
