Posted: 24/11/2013 at 12:00
I'd put money on salvia.
I have a similar one salvia amistad - if you google it you'll see exactly the same flowers, but mauve.
Bought mine in spring this yr at about 18", now nearly 4' and although it looks a but battered now, still covered in bloom! A really stunning plant - just hope it survives the winter. I gave it a good 4" mulch a couple of weeks ago.