When to Plant Sunchoke in Zone 4
In USDA zone 4a, plant outdoors April 17 to August 15, and expect your first harvest around August 15. (4a shown here — see 4a and 4b dates separately below.)
Sunchoke planting calendar for USDA Zone 4a
Average last spring frost
May 15
Average first fall frost
September 20
Direct sow
Apr 17
Projected first harvest
Aug 15
Sunchoke is ready to harvest in about 120 days, needing roughly 128 frost-free days in zone 4a.
Sunchoke planting calendar for USDA Zone 4b
Average last spring frost
May 10
Average first fall frost
September 25
Direct sow
Apr 12
Projected first harvest
Aug 10
Sunchoke is ready to harvest in about 120 days, needing roughly 138 frost-free days in zone 4b.
Not sure whether you're in 4a or 4b? 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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