Sorry folks, I made the Tundra up. I think I did that because that year our lowest temp here was 4 degrees. That was the coldest it's been since I moved up here from Lauderdale. I am about 25 miles SW of Gainesville. Last winter wasn't so bad, I only had to turn the heater on in the the GH once, and I only do that when the temps threaten lower than 30.
These Desert Roses are grown from seed, so no grafts here.