These plants are often grown as herbs (i.e. the sage in ‘sage and onions’) and for their ‘medicinal’ properties and sometimes for salvia trips apparently, but just look at the varieties of flower to be found – Salvias Salvias and more salvias! They are summer-flowering and love the sun. There are varieties that grow in zone 6 and some in zone 11 and some for every zone in between.
Rather than complete a post of my own words I decided the best approach is just to send you to a video and to Better Homes and Gardens blog on just this subject.
There are thirty-five varieties described with beautiful illustrations. I know you will enjoy!