Plant Tomatoes in Zone 3b
Seed-starting, transplant & harvest dates for USDA Zone 3b
Start indoors
Mar 25
Transplant
May 27
Harvest (~75d)
Aug 10
In Zone 3b, the average last spring frost is around May. Tomatoes is a tender crop, so give it a head start indoors about 7 weeks before that, then move it out after frost danger passes.
Last spring frost
May 13
First fall frost
Sep 18
Growing season
128 days
Full Tomatoes grow guide → · All crops for Zone 3b →
Frequently asked questions
When should I start tomatoes in Zone 3b?
Start tomatoes seeds indoors around Mar 25 (Zone 3b).
Can I direct sow tomatoes in Zone 3b?
Tomatoes is best started indoors and transplanted in Zone 3b rather than direct sown.