There is a white form also (but I don't grow that). My purple one sometimes sets seeds. It also benefits from a very hard prune every two years and sends up fresh and vigorous canes. Yes Bananafan I dare say we have a lot of unique native plants down here, but I am always interested and awed by the variety of the plants of nth america esp the wildflowers. I very much admire the resilience of keen gardeners there who go thru a winter I can only imagine, here in sub-tropical queensland, which is about as balmy as Floriday, I suppose. Anything you ever fancy in the line of seeds that I can help out with, just mention, I can only try. EXCEPT bananas :-(

I have the same "tree" in the ditch as the original picture in this post and I think the leaves look sumac-like. The hogweed has fern-like leaves. Based on that, what do y'all think we have here with the Queen-Ann_lace flowers and Sumac-like leaves?

Looks like Callistephus chinensis. Here is a link that might be useful: Callistephus chinensis

Maybe another species? multiflorum? For some reason I cannot direct link to Calscape so you will have to search the species. https://www.anniesannuals.com/plants/view/?id=3362 http://calscape.org/Dichelostemma-multiflorum-()