Light blue salvia - bog sage

This is a pretty salvia. About a metre high and lovely light to mid blue flowers for a long time in summer. I have masses to give away as it spreads like mad in my boggy garden. New little plants spring up all the time. If you want 20 or so, just give me a call. Better to fill a wettish area with than weeds! Does OK in non -boggy soil but may not spread so rapidly. Looks pretty with roses.