Black and Blue Sage
Salvia guaranitica 'Black & Blue'
Full to part sun
Blooms early summer to frost
Dies back in the winter
This plant has become very popular. It really is cool-looking with its blue flowers and black stems/calyxes. When I planted it, it spread like crazy! This can be easy to deal with if you have the time. I've seen it in full sun, and the leaves seemed to bleach out a bit, so consider only part sun. It also seems to be a heavy-feeder, so fertilize regularly.