We've got some limescale damage on our back wall where some water dripped over time. The water problem has been fixed and the damage can't be shifted apparently. So I want to cover it with something pretty! I tried growing a climbing rose but it died. Am not very green fingered and basically have no clue what to do. would love a wisteria but not sure whether that would survive! Any ideas of what would be easiest/work best/look nicest for an east facing wall. Would need to grow to about 4m to cover the limescale!