When to Plant Sweet Potatoes in Zone 4
In USDA zone 4, plant outdoors June 12 to September 20, and expect your first harvest around September 20.
Sweet Potatoes planting calendar for USDA Zone 4
Direct sow
Jun 12
Projected first harvest
Sep 20
Most sweet potatoes mature in about 100 days. Dates use USDA zone 4a average frost dates. Set your ZIP in HomeSown for dates tuned to your exact location.
What zone 4 means for sweet potatoes
Average last spring frost
May 15
Average first fall frost
September 20
Those two dates are what set the schedule above. Zone 4 gives you roughly 128 frost-free days, and sweet potatoes need about 100 days to mature.
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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