Plant Tomatoes in Zone 3a
Seed-starting, transplant & harvest dates for USDA Zone 3a
Start indoors
Mar 27
Transplant
May 29
Harvest (~75d)
Aug 12
In Zone 3a, 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 15
First fall frost
Sep 15
Growing season
123 days
Full Tomatoes grow guide → · All crops for Zone 3a →
Frequently asked questions
When should I start tomatoes in Zone 3a?
Start tomatoes seeds indoors around Mar 27 (Zone 3a).
Can I direct sow tomatoes in Zone 3a?
Tomatoes is best started indoors and transplanted in Zone 3a rather than direct sown.