Dyer’s Woad

QUICK IDENTIFICATION

  • Blue-green leaves with prominent white mid-rib down center of leaf
  • Bright, vibrant yellow flowers
  • Distinct pear-shaped seed pods that turn dark, purple-brown to black upon maturity
  • Height 2 to 3 feet

Video Information


Weed Pictures



Weed Information


Type Information
Toxicity Non-toxic
Control Hand pulling/digging (make sure to get 3 to 4 inches of root) and herbicide. Contact your County Weed District or local applicator for more information.
Habitat Disturbed areas, roadways, gravel pits and railroad tracks
Root 3 to 5 foot taproot
Leaf Shape Lance-shaped leaves with rounded tips and slightly wavy edges.
Lifespan Winter annual, biennial or a short-lived perennial.
Priority 1A Weed Not present or limited presence in Montana. If you think you’ve found this plant please contact your county weed coordinator, local MSU Extension Agent or MT Department of Agriculture immediately!
Similar Looking Plants Other mustards, especially yellow or common mustard
Important Information Originally a source of indigo dye; cabbage-like texture, squeaks when rubbed
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