Plant name | Zone | Start seeds indoors (spring/fall) | Start seeds outdoors (spring/fall) | Plant seedlings/transplants outdoors (spring/fall) | Plant spacing | # plants per person |
Petunia | 3a | Feb. 15-March 1 | Not recommended | On/around May 15 (after last frost) | 10-14 inches | n/a |
Petunia | 3b | Feb. 15-March 1 | Not recommended | On/around May 15 (after last frost) | 10-14 inches | n/a |
Petunia | 4a | Feb. 15-March 1 | Not recommended | On/around May 15 (after last frost) | 10-14 inches | n/a |
Petunia | 4b | Feb. 15-March 1 | Not recommended | On/around May 15 (after last frost) | 10-14 inches | n/a |
Petunia | 5a | Jan. 15-Feb. 1 | Not recommended | On/around April 15 (after last frost) | 10-14 inches | n/a |
Petunia | 5b | Jan. 15-Feb. 1 | Not recommended | On/around April 15 (after last frost) | 10-14 inches | n/a |
Petunia | 6a | Jan. 15-Feb. 1 | Not recommended | On/around April 15 (after last frost) | 10-14 inches | n/a |
Petunia | 6b | Jan. 15-Feb. 1 | Not recommended | On/around April 15 (after last frost) | 10-14 inches | n/a |
Petunia | 7a | Jan. 15-Feb. 1 | Not recommended | On/around April 15 (after last frost) | 10-14 inches | n/a |
Petunia | 7b | Jan. 15-Feb. 1 | Not recommended | On/around April 15 (after last frost) | 10-14 inches | n/a |
Petunia | 8a | Dec. 15-Jan. 1 | Not recommended | On/around March 15 (after last frost) | 10-14 inches | n/a |
Petunia | 8b | Dec. 15-Jan. 1 | Not recommended | On/around March 15 (after last frost) | 10-14 inches | n/a |
Petunia | 9a | 10-12 weeks before planting outside | Not recommended | Sept. 1-April 15 | 10-14 inches | n/a |
Petunia | 9b | 10-12 weeks before planting outside | Not recommended | Sept. 1-April 15 | 10-14 inches | n/a |
Petunia | 10a | 10-12 weeks before planting outside | Not recommended | Oct. 15-April 15 | 10-14 inches | n/a |
Petunia | 10b | 10-12 weeks before planting outside | Not recommended | Oct. 15-April 15 | 10-14 inches | n/a |
Petunia | 11a | 10-12 weeks before planting outside | Not recommended | Nov. 1-March 30 | 10-14 inches | n/a |
Petunia | 11b | 10-12 weeks before planting outside | Not recommended | Nov. 1-March 30 | 10-14 inches | n/a |
* Cool-weather annual that can be planted in early spring and also fall in Southern climates.