When to Plant Burdock in Zone 3
In USDA zone 3a, plant outdoors May 16 to September 13, and expect your first harvest around September 13. (3a shown here — see 3a and 3b dates separately below.)
Burdock planting calendar for USDA Zone 3a
Average last spring frost
May 30
Average first fall frost
September 10
Direct sow
May 16
Projected first harvest
Sep 13
Burdock is ready to harvest in about 120 days, needing roughly 103 frost-free days in zone 3a.
Burdock planting calendar for USDA Zone 3b
Average last spring frost
May 20
Average first fall frost
September 15
Direct sow
May 6
Projected first harvest
Sep 3
Burdock 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 burdock in the HomeSown library. Tap any for its full grow guide.
Common problems with burdock
What to watch for, with identification and treatment for each
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