I love Midnight Rose. The other three are all new to me. Kathy, I hope they all do well for you. Bronze Wave was the other one that I have that needs to be divided. That is the best most dependable plant.
Christine, In our climate the Heuchs never die back completely. They are always above ground, although pretty shriveled. They start putting out new tiny leaves around the end of March and are pretty fully leafed out by the beginning of May. Right now is the perfect time for us to divide them.
