Dyers Woad
Dyer's Woad was introduced into North America from Europe, probably late in the 17th century. It was cultivated as a sources of blue dye and has since naturalized as a weed of dry areas in our region. Dyer's Woad spreads primarily by seed.
Source: Idaho's Noxious Weeds by Robert H. Callihan & Timothy W. Miller
If you would like more information, email MWCA at acamm@montana.edu with your questions. A weed control expert will be happy to answer your questions.
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