When to Plant Sunchoke in Zone 3
In USDA zone 3a, plant outdoors May 2 to August 30, and expect your first harvest around August 30. (3a shown here — see 3a and 3b dates separately below.)
Sunchoke planting calendar for USDA Zone 3a
Average last spring frost
May 30
Average first fall frost
September 10
Direct sow
May 2
Projected first harvest
Aug 30
Sunchoke is ready to harvest in about 120 days, needing roughly 103 frost-free days in zone 3a.
Sunchoke planting calendar for USDA Zone 3b
Average last spring frost
May 20
Average first fall frost
September 15
Direct sow
Apr 22
Projected first harvest
Aug 20
Sunchoke is ready to harvest in about 120 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
1 variety of sunchoke in the HomeSown library. Tap any for its full grow guide.
Common problems with sunchoke
What to watch for, with identification and treatment for each
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