I've spotted them now numerous times around New Jersey and the first time I ever noticed one was on vacation in Newfoundland, I spotted it in bogland leading up to a landlocked fjord near gros morne (western newfoundland). I just never remembered seeing a flower like that facing the ground, so found it interesting and shot a picture and ID'd it later on.

So yeah, they absolutely grow wild but aren't an extremely prolific plant, best places to see them are usually near bogs and ponds.