Burdock root
Burdock root is the long taproot of Arctium lappa, a biennial in the daisy family grown as a vegetable (gobo) in Japan and China and cultivated or wild harvested in Europe and North America for herbal use. Roots are harvested in the first year, washed, sliced and dried, then sold cut for tea, milled to powder, or extracted. Fresh root is a separate produce trade.
Suppliers sell different products under the same name. Specify the one you need.
Dried root in tea cut for infusions and blends.
Dried root milled to a powder for capsules, blends and food use.
Water or hydroalcoholic extract sold as liquid or spray-dried powder, usually by extract ratio.
Root from certified organic cultivation or certified wild collection.
Compare each result with your own specification when the lot arrives.
Keep cut root and powder sealed in lined bags or drums, cool, dry and out of direct light. Powders and dry extracts pick up moisture and cake once opened, so reseal containers and limit time open on the production floor. Shelf life or a retest date comes from the supplier's specification, and the marker assay is usually repeated at retest.
Inulin and moisture vary with harvest time and drying, and wild-collected lots carry more identity risk than cultivated ones. Record origin, whether cultivated or wild, and supplier lot, and keep an approved retain sample for comparison.
Facts from regulators and standards bodies, each linked to its source.
Health Canada's Burdock natural health product monograph lists Arctium lappa with the dried root as the source part.
Source: webprod.hc-sc.gc.ca (opens in a new tab)The EU Novel Food status Catalogue entry for Arctium lappa (POL-NF-00145) concerns the entire plant and lists it as not novel in food supplements.
Source: ec.europa.eu (opens in a new tab)This is general information, not regulatory advice. Status differs by country and by how the ingredient is used, so check the rules for your product and market.
Manufacturers and distributors whose own websites say they sell it.
Distributor · Norway, IA
Frontier Co-op is a member-owned cooperative in Norway, Iowa, that sources and sells bulk herbs, spices, teas and botanicals by the pound, with a separate wholesale site for business buyers.
Suppliers are in alphabetical order and none pays to appear. Each claim is checked against the supplier’s own website on the date shown. Ask for the specification sheet and a recent COA before you order, and confirm details with the supplier.
Common forms include cut and sifted root, root powder, extract and organic. Ask each supplier for the specification sheet of the exact grade they quote.
Expect identity, inulin or marker content, heavy metals, microbiology, pesticide residues and physical tests, each with its method, specification and result for that lot.
Keep cut root and powder sealed in lined bags or drums, cool, dry and out of direct light. Powders and dry extracts pick up moisture and cake once opened, so reseal containers and limit time open on the production floor. Shelf life or a retest date comes from the supplier's specification, and the marker assay is usually repeated at retest.
Health Canada's Burdock natural health product monograph lists Arctium lappa with the dried root as the source part. The EU Novel Food status Catalogue entry for Arctium lappa (POL-NF-00145) concerns the entire plant and lists it as not novel in food supplements.
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