Plant name | Zone | Start seeds indoors (spring/fall) | Start seeds outdoors (spring/fall) | Plant seedlings/transplants outdoors (spring/fall) | Plant spacing | # plants per person |
Columbine | 3a | March 15-April 1 | On/around May 15 (after last frost) | On/around May 15 (after last frost) | 1-2 feet | n/a |
Columbine | 3b | March 15-April 1 | On/around May 15 (after last frost) | On/around May 15 (after last frost) | 1-2 feet | n/a |
Columbine | 4a | March 15-April 1 | On/around May 15 (after last frost) | On/around May 15 (after last frost) | 1-2 feet | n/a |
Columbine | 4b | March 15-April 1 | On/around May 15 (after last frost) | On/around May 15 (after last frost) | 1-2 feet | n/a |
Columbine | 5a | Feb. 15-March 1 | On/around April 15 (after last frost) | On/around April 15 (after last frost) | 1-2 feet | n/a |
Columbine | 5b | Feb. 15-March 1 | On/around April 15 (after last frost) | On/around April 15 (after last frost) | 1-2 feet | n/a |
Columbine | 6a | Feb. 15-March 1 | On/around April 15 (after last frost) | On/around April 15 (after last frost) | 1-2 feet | n/a |
Columbine | 6b | Feb. 15-March 1 | On/around April 15 (after last frost) | On/around April 15 (after last frost) | 1-2 feet | n/a |
Columbine | 7a | Feb. 15-March 1 | On/around April 15 (after last frost) | On/around April 15 (after last frost) | 1-2 feet | n/a |
Columbine | 7b | Feb. 15-March 1 | On/around April 15 (after last frost) | On/around April 15 (after last frost) | 1-2 feet | n/a |
Columbine | 8a | Jan. 15-Feb. 1 | On/around March 15 (after last frost) | On/around March 15 (after last frost) | 1-2 feet | n/a |
Columbine | 8b | Jan. 15-Feb. 1 | On/around March 15 (after last frost) | On/around March 15 (after last frost) | 1-2 feet | n/a |
Columbine | 9a | Dec. 15-Jan. 1 | On/around March 15 (after last frost) | On/around March 15 (after last frost) | 1-2 feet | n/a |
Columbine | 9b | Dec. 15-Jan. 1 | On/around March 15 (after last frost) | On/around March 15 (after last frost) | 1-2 feet | n/a |
Columbine | 10a | Not recommended | Not recommended | Not recommended | Not recommended | n/a |
Columbine | 10b | Not recommended | Not recommended | Not recommended | Not recommended | n/a |
Columbine | 11a | Not recommended | Not recommended | Not recommended | Not recommended | n/a |
Columbine | 11b | Not recommended | Not recommended | Not recommended | Not recommended | n/a |
* Spring-blooming. Start indoors 6-8 weeks before the average last frost date or direct sow outside after the threat of frost has passed.