Plant name | Zone | Start seeds indoors (spring/fall) | Start seeds outdoors (spring/fall) | Plant seedlings/transplants outdoors (spring/fall) | Plant spacing | # plants per person |
New Guinea Impatiens/Sun Impatiens | 3a | Feb. 1-15 | Not recommended | On/around May 15 (after last frost) | 12-15 inches | n/a |
New Guinea Impatiens/Sun Impatiens | 3b | Feb. 1-15 | Not recommended | On/around May 15 (after last frost) | 12-15 inches | n/a |
New Guinea Impatiens/Sun Impatiens | 4a | Feb. 1-15 | Not recommended | On/around May 15 (after last frost) | 12-15 inches | n/a |
New Guinea Impatiens/Sun Impatiens | 4b | Feb. 1-15 | Not recommended | On/around May 15 (after last frost) | 12-15 inches | n/a |
New Guinea Impatiens/Sun Impatiens | 5a | Jan. 1-15 | Not recommended | On/around April 15 (after last frost) | 12-15 inches | n/a |
New Guinea Impatiens/Sun Impatiens | 5b | Jan. 1-15 | Not recommended | On/around April 15 (after last frost) | 12-15 inches | n/a |
New Guinea Impatiens/Sun Impatiens | 6a | Jan. 1-15 | Not recommended | On/around April 15 (after last frost) | 12-15 inches | n/a |
New Guinea Impatiens/Sun Impatiens | 6b | Jan. 1-15 | Not recommended | On/around April 15 (after last frost) | 12-15 inches | n/a |
New Guinea Impatiens/Sun Impatiens | 7a | Jan. 1-15 | Not recommended | On/around April 15 (after last frost) | 12-15 inches | n/a |
New Guinea Impatiens/Sun Impatiens | 7b | Jan. 1-15 | Not recommended | On/around April 15 (after last frost) | 12-15 inches | n/a |
New Guinea Impatiens/Sun Impatiens | 8a | Dec. 1-15 | Not recommended | On/around March 15 (after last frost) | 12-15 inches | n/a |
New Guinea Impatiens/Sun Impatiens | 8b | Dec. 1-15 | Not recommended | On/around March 15 (after last frost) | 12-15 inches | n/a |
New Guinea Impatiens/Sun Impatiens | 9a | Nov. 1-15 | Not recommended | On/around Feb. 15 (after last frost) | 12-15 inches | n/a |
New Guinea Impatiens/Sun Impatiens | 9b | Nov. 1-15 | Not recommended | On/around Feb. 15 (after last frost) | 12-15 inches | n/a |
New Guinea Impatiens/Sun Impatiens | 10a | 12-14 weeks before planting outdoors | Not recommended | year-round | 12-15 inches | n/a |
New Guinea Impatiens/Sun Impatiens | 10b | 12-14 weeks before planting outdoors | Not recommended | year-round | 12-15 inches | n/a |
New Guinea Impatiens/Sun Impatiens | 11a | 12-14 weeks before planting outdoors | Not recommended | year-round | 12-15 inches | n/a |
New Guinea Impatiens/Sun Impatiens | 11b | 12-14 weeks before planting outdoors | Not recommended | year-round | 12-15 inches | n/a |
* Can be started from seed, but is most commonly purchased as starter plants. If growing from seed, start approximately 12 weeks before the average last frost date. Starting seeds outdoors not recommended. Plant seedlings or transplants outside after the threat of frost has passed.