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Canadian Thistle… Oops! July 22, 2009

Posted by littlebangtheory in Art and Nature, macro photos.
Tags: , ,
3 comments

Lately I’ve been taken by this thistle,*  which seems to be more prevalent this year than in years past:

The REAL Canadian Thistle

Turns out it’s Crisium arvense,  Canadian (or Canada) thistle, and its proliferation isn’t likely to be just a matter of me noticing it – entire on-line forums are dedicated to sharing tips on its eradication.  Apparently it grows from root “colonies,” thrives on being cut, and produces seeds which are both plentiful and viable within a couple of days of the appearance of flowers.

Still, it’s beautiful, so enjoy it from a distance, ‘k?

Edit:

*  This photo was inadvertently inserted, um, by me, instead of the correct one above:

Canadian thistle impostor

I was trying, as yet unsuccessfully, to identify it (it’s not a thistle) and got them mixed up.  Sorry!