Oh-so-blue

I found these at the farm stand where I buy honey (real honey, from bees, in a glass jar not that sticky sugary tasteless stuff in a squidgy plastic bottle shaped like a bear). The flowers are pure blue, with sepals that are very nearly black.

I have planted three in the front garden, near the delphiniums. They smell sage-like. I hope the deer don't like them.

Salvia guaranitica 'Black and Blue'. (There was no label on the plants... googled them, and they can grow up to six feet tall, but I don't think the season is long enough here.)