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Celery

Use our zone-based planting guide to know when to plant celery.

Plant name Zone Start seeds indoors Start seeds outdoors Plant seedlings/transplants outdoors Plant spacing # plants per person
Celery 3a March 1-15 Not recommended On/around May 15 (after last frost) 12-18 inches 5
Celery 3b March 1-15 Not recommended On/around May 15 (after last frost) 12-18 inches 5
Celery 4a March 1-15 Not recommended On/around May 15 (after last frost) 12-18 inches 5
Celery 4b March 1-15 Not recommended On/around May 15 (after last frost) 12-18 inches 5
Celery 5a Feb. 1-15 Not recommended On/around April 15 (after last frost) 12-18 inches 5
Celery 5b Feb. 1-15 Not recommended On/around April 15 (after last frost) 12-18 inches 5
Celery 6a Feb. 1-15 Not recommended On/around April 15 (after last frost) 12-18 inches 5
Celery 6b Feb. 1-15 Not recommended On/around April 15 (after last frost) 12-18 inches 5
Celery 7a Feb. 1-15 Not recommended On/around April 15 (after last frost) 12-18 inches 5
Celery 7b Feb. 1-15 Not recommended On/around April 15 (after last frost) 12-18 inches 5
Celery 8a Jan. 1-15 Not recommended On/around March 15 (after last frost) 12-18 inches 5
Celery 8b Jan. 1-15 Not recommended On/around March 15 (after last frost) 12-18 inches 5
Celery 9a Dec. 1-15 Not recommended On/around Feb. 15 (after last frost) 12-18 inches 5
Celery 9b Dec. 1-15 Not recommended On/around Feb. 15 (after last frost) 12-18 inches 5
Celery 10a Nov. 15-30 Not recommended On/around Jan. 30 (after last frost) 12-18 inches 5
Celery 10b Nov. 15-30 Not recommended On/around Jan. 30 (after last frost) 12-18 inches 5
Celery 11a September-March September-March September-March 12-18 inches 5
Celery 11b September-March September-March September-March 12-18 inches 5

* Celery is one of the most challenging vegetables to grow. It has a very long growing season. As such, it is not recommended to start from seed outdoors except in the warmest climates. The early jumpstart indoors is important. Start seeds indoors 8-10 weeks before the average last frost date.