constance, I've got some in really dry spots, and they are doing great, as long as I give them a little water weekly. I think they have done as well as the ones that get watered more often. Maybe it's the soil they are in. I just don't know why they have done so well, no matter where they are in my yard!
I don't like the idea of doing a spade division on them because they are so round. If it's the only way to do it, then I'll have to do that, but I'm sure hoping that breaking off pieces from the outside will work. And, I'll pot them up in good potting soil in the spring. They wouldn't have a chance right now with this horrible heat.