Well I have been slacking on my plant picks but I definately need to do one in August. Since August is the best month ever (being my birthday month) I wanted to do a one of my all time favorite plants - The Cala Lily. These beautiful lilies are native to South Africa, and happen to be poisonous. So don't eat them. I had cala lilies in my wedding bouquet. They can be cold hardy depending on the species.