Plant Onions in Zone 8a
Seed-starting, transplant & harvest dates for USDA Zone 8a
Start indoors
Jan 14
Transplant
Mar 11
Harvest (~100d)
Jun 19
In Zone 8a, the average last spring frost is around March. Onions is a hardy crop, so give it a head start indoors about 10 weeks before that, then move it out after frost danger passes.
Last spring frost
Mar 25
First fall frost
Nov 8
Growing season
228 days
Full Onions grow guide → · All crops for Zone 8a →
Frequently asked questions
When should I start onions in Zone 8a?
Start onions seeds indoors around Jan 14 (Zone 8a).
Can I direct sow onions in Zone 8a?
Onions is best started indoors and transplanted in Zone 8a rather than direct sown.