Another nice one. I guess it is thriving at high altitude.
After reading your post about goldenrods (and these are not Weese Weeds in your photo! ;-)) I wonder if this might be one, too?
Weese weeds, LOL Those darned weeds are everywhere.
James, "Weese Weed", definition: a solitary weed and/or multiple weeds growing in an urban environment and/or in front of man made constructions, i.e. walls, fire plugs, fences et al. They are a non-indigenous species in Europe, esp. Germany (ref. comments in markus spring.;-)