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Bull Thistle

Cirsium vulgare


Spiny leaves with a pretty purple flower.


Thistles are considered an invasive species in Oregon. They grow just about everywhere, are extremely hardy and difficult to control. This one was spotted in a natural area at Elk Rock Island along the Willamette River in Milwaukie, Oregon.

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Spotted by

Oregon, USA

Spotted on Sep 5, 2012
Submitted on Sep 5, 2012


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