Richard Gardner, UMES,

Nodding plumeless thistle

Carduus nutans

Nodding plumeless thistle (Carduus nutans) is an invasive plant. It is a native of Eurasia and was first detected in North America in 1800.

This thistle has a long history as an invasive species. It has been declared a noxious weed in Australia, many U.S. states and Canadian provinces. Some farmers spend many hours attempting to rid them from farm ground, mostly pastures.

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