I have tried growing it here in Mississippi and can't seem to keep the squirrels from eating it. Hope they are healthy! Echinacea is something that you want to take when you feel like you are coming down with something and not just an everyday thing. I have found that it does help to some degree when i am coming down with a cold, but not enough that I would try growing it again or buy it from a store. Homemade chicken soup works just as well with me.