Shaggy pure silver leaves which glisten in the sun on this hardy shrubby perennial. This is the one often seen growing around old homes in country areas, in fact this is where I found it!
I don't know how valid it is but it was reputed to repel snakes, certainly it does have a strong herbal medicinal odour.
Useful as a hedging plant too.
Full sun 100 cm h x 60cm w.