Also known as Meadow-Rue. Now, which Thalictrum it is I don’t know. (It is ‘a difficult genus with poorly understood species boundaries’ according to Wikipedia, Oy!) Our common roadside one though, doing admirably as a garden plant under the library windows. Very consistent structure to its blossom spikes and quite capable of getting six feet tall.

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When given more space, as is the case with the end one, you can see it can be fairly substantial. The others are kept lankier because of the hostas they are competing. It will self seed, which isn’t a problem with this plant since the seedlings are very puny for the first few years.