I've been waiting for these plants to bloom for a while so that I could figure out what they were. After getting several opinions, figured out they are peonies. Aren't they pretty? They seem to ask to be cut and put in a vase, since the flowers are so big they make the plant flop over when they bloom.
In other news, my tomatoes are blooming and things are sprouting and the herbs are spreading. The weather has warmed up and the plants are loving it.