Thanks, Calin!
I thought of that too . What made me wonder is that it is suppose to like moist soil and I am on sand and I don't always get everything watered. It doesn't have the yellow markings like the pictures I've seen of the pardalinum and I live in zone 3, yet it is thriving here. Perhaps there is a variety of Pardalinum that tolerates those conditions, I'm hoping someone will know.