Hey, if they have survived there this long, they must be getting what they need, and are happy. When I was a kid and we would go out into the bog area to pick wild blue berries, my grandma would show me the wild irises growing there. We would sit on the ground picking berries and gaze at the beautiful irises growing wild. Boy, I can still taste those wild blueberry pies!
Rob, put on some shoes and go dig some more!