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Dyer's Woad (Isatis tinctoria)

Dyer's Woad - Isatis tinctoria
Dyer's Woad
Isatis tinctoria

This striking yellow plant is native to southeast Russia and is sometimes found as a garden ornamental in the western US.

Dyer’s Woad is a non-palatable, aggressive weed with allelopathic properties (it produces chemicals which inhibit growth in other plants close by.) This species has a history of establishing across thousands of acres of western rangeland, and infestations are known from eight western states.

Dyer's Woad rosette
Dyer's Woad rosette

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