This is a great plant for Oklahoma gardens! I got it three years ago from Bustani Plant Farm and have never seen it any place else. It grows about 8-12″ high, blooms and blooms, takes heat and drought. I keep cutting it back all summer to keep it in a space about 3′ x 3′. It has self-seeded a bit, and I have transplanted it with success but it’s not that easy to dig up as it seems to have only a tap root.