Carolyn did a lot of legwork and was able to find a local nursery that would get her a few plants. She also found this pretty purple/pink in addition to the white we had seen. She was kind enough to buy some for another friend and me.
I planted my two in a pot with a blue and white Lobelia and thought they looked good together. They are supposed to be drought resistant and the flowers close up at night. Don't they just make you smile?