When I was Head Gardener for Rodbaston College in Staffordshire part of my job was ‘the National Collection of New World Salvias’.
The whole collection had approx 300 different species, varieties and ‘man-made’ cultivars of which the original wild varieties all came from some part of the Americas. Many are from Central America and southern U.S.A. and found to be hardy in most parts of Britain.
I decided to give up my Salvia business and online shop after barely a half year as the ‘selling’ part proved just too much hard work. But will try and keep a collection going on my allotment of the mainly hardy shrubby varieties and some hardy species.