I first discovered teasels along a roadbed (i.e., disturbed ground, which invasives seem to love) near an O map in NY, and had to look up what it was (because I just have to look up and learn about stuff I don't know, mostly nature related). Now I notice them wherever they appear.
The VOA Park had the most I've ever seen in one place! It's a good thing they weren't too prickly.
Kathy asked me how to spell teasel when we were in the car, and I had no clue that it was even a word. I kept thinking of them as cattails or thistles even though I knew they weren't either of those.