Agastache urticifolia
I think I'm up to about 75 native flowers with the additions this year. This one has actually been around here for a few years, growing in a native rose/snowberry copse in the north fence. Knowing what mint can do (spread everywhere), I was a little worried, but when several plants showed up in the prairie south of the copse I decided to make sure they're native (they are), and let them go. They bloomed this year...