Thorny, monsterous looking weed ID

oatlordSeptember 19, 2008

We have this weed growing in our field that looks like an absolute monster. It's low-growing with thorns on the edges of the leaf and purple stems. I've included a picture of this beast. I appreciate any help identifying this thing. Thanks.

Image link:

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That looks to me like one of the Fall Dandelions. Does it get many stalks of small yellow flowers?

    Bookmark   September 20, 2008 at 6:49AM
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There are no flowers as of yet. I took another picture with a glove next to it for scale.

I looked up fall dandelions, and it looks like it could be it, but it's not a perfect match.

These do not have tap roots. They have very big horizontal roots running out from them.

    Bookmark   September 21, 2008 at 8:33PM
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Forgot to include the link to the picture:

    Bookmark   September 21, 2008 at 8:34PM
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jean001(z8aPortland, OR)

To me, the leaves look fuzzy, the edges armed with prickly thorns.

If so, I'd say it's a thistle.

    Bookmark   September 30, 2008 at 12:31AM
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Beeone(4 N. Wyo.)

Looks like a thistle to me too. If it has large roots running horizontally, it would be one of the perennial thistles and you don't want to let it get started. Chop off or pull every one you see before it gets established or you will have years of herbicide application ahead of you to get rid of it.

    Bookmark   October 23, 2008 at 1:59AM
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