When to Plant Sweet Potatoes in Zone 3
In USDA zone 3a, plant outdoors June 27 to October 5, and expect your first harvest around October 5. (3a shown here — see 3a and 3b dates separately below.)
Sweet Potatoes planting calendar for USDA Zone 3a
Average last spring frost
May 30
Average first fall frost
September 10
Direct sow
Jun 27
Projected first harvest
Oct 5
Most sweet potatoes mature in about 100 days, needing roughly 103 frost-free days in zone 3a.
Sweet Potatoes planting calendar for USDA Zone 3b
Average last spring frost
May 20
Average first fall frost
September 15
Direct sow
Jun 17
Projected first harvest
Sep 25
Most sweet potatoes mature in about 100 days, 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
2 varieties of sweet potatoes in the HomeSown library. Tap any for its full grow guide.
Common problems with sweet potatoes
What to watch for, with identification and treatment for each
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