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Rudbeckia triloba or giant ragweed?

Posted by kotabear5 7b (My Page) on
Sat, May 17, 14 at 13:44

Tons of these have popped up around our yard over the past month. Currently about 2ft tall. Leaves and stems are green and hairy, but not prickly. I can't tell if they're rudbeckia triloba (fun) or giant ragweed (not fun).


Follow-Up Postings:

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RE: Rudbeckia triloba or giant ragweed?

Looks like leggy Rudbeckia triloba, does this one grow in part shade? My volunteers grow more compact but get full sun. And they do reseed very successfully, so very probably Rudbeckia


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RE: Rudbeckia triloba or giant ragweed?

Thank you! Yep, lots of these all over shady parts of the yard.


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RE: Rudbeckia triloba or giant ragweed?

Could also be Rudbeckia laciniata, cutleaf coneflower.


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RE: Rudbeckia triloba or giant ragweed?

I'm pretty sure that's giant ragweed, just one stem volunteering like that. It really does look similar to R. laciniata but if it was a single plant it would make more robust basal growth before sending up a stalk.


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