description Nodding Thistle Overview
Nodding Thistle (Carduus nutans) is a Eurasian biennial weed introduced to North America whose large solitary flower heads droop characteristically on arching stems, now classified as noxious in numerous states.
help Nodding Thistle FAQ
Why does Nodding Thistle have its name?
Nodding thistle is named for its large flower heads, which droop or nod on arching stems. Its scientific name is Carduus nutans.
Is Nodding Thistle native to North America?
No. Nodding thistle is Eurasian and was introduced to North America. It is now classified as a noxious weed in numerous states because it can spread through disturbed and grazed land.
What does a Nodding Thistle flower look like?
It has a large, solitary flower head carried on an arching stem. The head typically hangs downward, which distinguishes it from many upright thistles.
Why is Nodding Thistle considered a weed?
Nodding thistle can invade agricultural land, pasture, and other open habitats. Its noxious-weed status reflects concern about spread and competition with useful vegetation.
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