Growing Burdock: A Complete Profile
By Growing Home Greens Team · August 10, 2026
Burdock is a long-rooted Asian specialty root vegetable, grown for its mild, slightly sweet root rather than for anything happening above ground.
Deep, loose soil is non-negotiable
Direct-seed only, sown anytime in spring, about 2 inches apart and three-quarters of an inch deep, in rows 24 inches apart, thinned to 2 to 3 inches apart. The root needs 1 to 2 feet of deep, well-drained soil to grow straight and free of forks; shallow or compacted ground produces stubby, misshapen roots instead of the long, straight ones the crop is grown for.
Harvest without breaking the root
Harvest runs from fall through early spring. A raised bed with removable sides makes it possible to harvest from the side rather than digging straight down, which results in far fewer broken roots than trying to pull a long taproot straight up out of open ground.
Storage
Store unwashed roots at 32°F and 95 percent relative humidity; they hold up better and wilt more slowly than washed roots.
Burdock has no recorded companions or antagonists in our data. See the full companion guide for burdock for how it’s tracked. At 4 plants per square foot, it needs a dedicated deep-soil bed in the Garden Designer, ideally one built or amended specifically for long-rooted crops.
Source: Burdock: Key Growing Information, Johnny’s Selected Seeds.
Companion planting guide for Burdock · Find your planting dates
Typically viable in USDA zones 3-10. Not sure your zone? Look it up by ZIP code.
Method: Direct sow: Direct-sow outside. Burdock doesn't transplant well, or doesn't need the extra time indoors.
See exact start-indoors, direct-sow, and harvest dates for your zone →
How many Burdock plants fit per square foot?
Spacing: 4 per square foot (square-foot-gardening spacing). Mature height: 2-4 ft.
Varieties worth considering
- 'Chiko': Johnny's Selected Seeds' listed burdock variety, described as a nutritious, medicinal Asian specialty; there's little named-cultivar diversity beyond it in the seed trade this plant is sold through. (source)
Cited from the source shown next to each variety. We haven't grown these ourselves yet, so treat this as a research-backed starting point, not a personal endorsement.
Where to buy burdock seeds
As an Amazon Associate we earn from qualifying purchases. Some links on this page also go to other retailers we may earn a commission from as an affiliate, at no extra cost to you. We only recommend products with a genuine consensus of positive, independent reviews. See the sources cited on each item.
See it growing
Search YouTube for "growing burdock" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
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Growing Burdock: A long-rooted Asian specialty root vegetable grown for its mild, slightly sweet root, needing deep, loose soil to grow straight.
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