Plant Tomatoes in Zone 4b
Seed-starting, transplant & harvest dates for USDA Zone 4b
Start indoors
Mar 17
Transplant
May 19
Harvest (~75d)
Aug 2
In Zone 4b, 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 5
First fall frost
Sep 28
Growing season
146 days
Full Tomatoes grow guide → · All crops for Zone 4b →
Frequently asked questions
When should I start tomatoes in Zone 4b?
Start tomatoes seeds indoors around Mar 17 (Zone 4b).
Can I direct sow tomatoes in Zone 4b?
Tomatoes is best started indoors and transplanted in Zone 4b rather than direct sown.