When to Plant Tomatoes in Zone 3
In USDA zone 3a, start seeds indoors around April 18, transplant or plant outdoors June 13 to August 30, and expect your first harvest around August 30. (3a shown here — see 3a and 3b dates separately below.)
Tomatoes planting calendar for USDA Zone 3a
Average last spring frost
May 30
Average first fall frost
September 10
Start seeds indoors
Apr 18
Transplant outdoors
Jun 13
Projected first harvest
Aug 30
Most tomatoes mature in about 55 to 85 days depending on the variety, needing roughly 103 frost-free days in zone 3a.
Tomatoes planting calendar for USDA Zone 3b
Average last spring frost
May 20
Average first fall frost
September 15
Start seeds indoors
Apr 8
Transplant outdoors
Jun 3
Projected first harvest
Aug 20
Most tomatoes mature in about 55 to 85 days depending on the variety, needing roughly 118 frost-free days in zone 3b.
Not sure whether you're in 3a or 3b? Set your ZIP in HomeSown for dates tuned to your exact location.
Varieties to grow
30 varieties of tomatoes in the HomeSown library. Tap any for its full grow guide.
Common problems with tomatoes
What to watch for, with identification and treatment for each
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