Plant name | Zone | Start seeds indoors (spring/fall) | Start seeds outdoors (spring/fall) | Plant seedlings/transplants outdoors (spring/fall) | Plant spacing | # plants per person |
Dianthus | 3a | March 15-April 1 | On/around May 15 (after last frost) | On/around May 15 (after last frost) | 8-12 inches | n/a |
Dianthus | 3b | March 15-April 1 | On/around May 15 (after last frost) | On/around May 15 (after last frost) | 8-12 inches | n/a |
Dianthus | 4a | March 15-April 1 | On/around May 15 (after last frost) | On/around May 15 (after last frost) | 8-12 inches | n/a |
Dianthus | 4b | March 15-April 1 | On/around May 15 (after last frost) | On/around May 15 (after last frost) | 8-12 inches | n/a |
Dianthus | 5a | Feb. 15-March 1 | On/around April 15 (after last frost) | On/around April 15 (after last frost) | 8-12 inches | n/a |
Dianthus | 5b | Feb. 15-March 1 | On/around April 15 (after last frost) | On/around April 15 (after last frost) | 8-12 inches | n/a |
Dianthus | 6a | Feb. 15-March 1 | On/around April 15 (after last frost) | On/around April 15 (after last frost) | 8-12 inches | n/a |
Dianthus | 6b | Feb. 15-March 1 | On/around April 15 (after last frost) | On/around April 15 (after last frost) | 8-12 inches | n/a |
Dianthus | 7a | Feb. 15-March 1 | On/around April 15 (after last frost) | On/around April 15 (after last frost) | 8-12 inches | n/a |
Dianthus | 7b | Feb. 15-March 1 | On/around April 15 (after last frost) | On/around April 15 (after last frost) | 8-12 inches | n/a |
Dianthus | 8a | Jan. 15-Feb. 1 | On/around March 15 (after last frost) | On/around March 15 (after last frost) | 8-12 inches | n/a |
Dianthus | 8b | Jan. 15-Feb. 1 | On/around March 15 (after last frost) | On/around March 15 (after last frost) | 8-12 inches | n/a |
Dianthus | 9a | 6-8 weeks before planting outdoors | year-round | year-round | 8-12 inches | n/a |
Dianthus | 9b | 6-8 weeks before planting outdoors | year-round | year-round | 8-12 inches | n/a |
Dianthus | 10a | 6-8 weeks before planting outdoors | year-round | year-round | 8-12 inches | n/a |
Dianthus | 10b | 6-8 weeks before planting outdoors | year-round | year-round | 8-12 inches | n/a |
Dianthus | 11a | 6-8 weeks before planting outdoors | year-round | year-round | 8-12 inches | n/a |
Dianthus | 11b | 6-8 weeks before planting outdoors | year-round | year-round | 8-12 inches | n/a |
* Some varieties may grow as short-lived perennials in certain Zones. Consult the plant tag for specifics. Start seeds indoors 6-8 weeks before the average last frost date or direct sow or plant seedlings after the threat of frost has passed. Some varieties can tolerate a light frost.