Giraffe's Knees

I got this plant from a specialty nursery a few years ago. It was in the fall and getting ready to go dormant, so it was discounted. The ...Read Morenext year it came back bigger and better than ever and bloomed with it's interesting but not terribly attractive aroid flowers. The following year I had Giraffe's Knees popping up all over the garden. I thought it was a rare plant that would be difficult to propagate, never thinking it would spread as much as 20 or more feet from the parent in one year. Cool looking plant seems to be very drought tolerant and looks happiest with some shade at the edge of the canopy of a massive live oak. Most of them go dormant, but some keep their leaves through the winter. The original parent plant is probably close to 4 feet tall. The seedlings vary from 1 to 2 feet and are doing well in sandy soil that has not been enriched where they happened to come up. I am in zone 10a coastal South Florida, so don't know how it does in colder areas. While it does not seem like it would be overly competitive with surrounding plants, if it seeds in this easily everywhere it has the potential to be a bit invasive.