Plant Onions in Zone 7b
Seed-starting, transplant & harvest dates for USDA Zone 7b
Start indoors
Jan 23
Transplant
Mar 20
Harvest (~100d)
Jun 28
In Zone 7b, the average last spring frost is around April. 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
Apr 3
First fall frost
Nov 1
Growing season
212 days
Full Onions grow guide → · All crops for Zone 7b →
Frequently asked questions
When should I start onions in Zone 7b?
Start onions seeds indoors around Jan 23 (Zone 7b).
Can I direct sow onions in Zone 7b?
Onions is best started indoors and transplanted in Zone 7b rather than direct sown.