When to Plant Burdock in Idaho
Idaho spans USDA hardiness 4a to 7b (zones 4a to 7b on this page). Plant burdock by your local frost date, not the calendar — pick your zone below for exact start-indoors, transplant, and harvest dates.
Jump to: Zone 4a · Zone 4b · Zone 5a · Zone 5b · Zone 6a · Zone 6b · Zone 7a · Zone 7b
Burdock planting calendar for Idaho, Zone 4a
Average last spring frost
May 15
Average first fall frost
September 20
Direct sow
May 1
Projected first harvest
Aug 29
Burdock is ready to harvest in about 120 days. Full zone 4 guide (both 4a and 4b) →
Burdock planting calendar for Idaho, Zone 4b
Average last spring frost
May 10
Average first fall frost
September 25
Direct sow
Apr 26
Projected first harvest
Aug 24
Burdock is ready to harvest in about 120 days. Full zone 4 guide (both 4a and 4b) →
Burdock planting calendar for Idaho, Zone 5a
Average last spring frost
May 5
Average first fall frost
October 1
Direct sow
Apr 21
Projected first harvest
Aug 19
Burdock is ready to harvest in about 120 days. Full zone 5 guide (both 5a and 5b) →
Burdock planting calendar for Idaho, Zone 5b
Average last spring frost
April 30
Average first fall frost
October 5
Direct sow
Apr 16
Projected first harvest
Aug 14
Burdock is ready to harvest in about 120 days. Full zone 5 guide (both 5a and 5b) →
Burdock planting calendar for Idaho, Zone 6a
Average last spring frost
April 25
Average first fall frost
October 10
Direct sow
Apr 11
Projected first harvest
Aug 9
Burdock is ready to harvest in about 120 days. Full zone 6 guide (both 6a and 6b) →
Burdock planting calendar for Idaho, Zone 6b
Average last spring frost
April 20
Average first fall frost
October 15
Direct sow
Apr 6
Projected first harvest
Aug 4
Burdock is ready to harvest in about 120 days. Full zone 6 guide (both 6a and 6b) →
Burdock planting calendar for Idaho, Zone 7a
Average last spring frost
April 15
Average first fall frost
October 20
Direct sow
Apr 1
Projected first harvest
Jul 30
Burdock is ready to harvest in about 120 days. Full zone 7 guide (both 7a and 7b) →
Burdock planting calendar for Idaho, Zone 7b
Average last spring frost
April 10
Average first fall frost
October 30
Direct sow
Mar 27
Projected first harvest
Jul 25
Burdock is ready to harvest in about 120 days. Full zone 7 guide (both 7a and 7b) →
Not sure which half-zone you're in? 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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