Answer by stormy for What is this prickly, burr-covered plant with different...
Some or most thistles are biennials. That means it takes two years, two seasons to get to the flowering or reproductive stage. The best way I've found is just pull these guys up when you find them,...
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I think this could be a common thistle, judging by the purple flower and spikes.The Wikipedia article on it: https://en.wikipedia.org/wiki/CirsiumI don't know the answer to the last two questions though.
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What is this prickly, burr-covered plant with different colored flowers on...
I'm trying to identify a prickly, burr-type plant growing wild in my yard in Massachusetts, USA. I found about five of them in an area of full sun. Temperatures over the last few months have varied...
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