Sempervivum Royal Ruby Sempervivum Royal Ruby Sempervivum Royal Ruby Large red rosettes in handsome clumps. £2.60 Quantity: at £2.60 each Add To Basket An outstanding red-leafed variety of Houseleek, 'Royal Ruby' has distinctive, long, pointed leaves in a wonderful shade of red. The colour is fairly dark over winter and brightens in summer. 'Royal Ruby' makes good clumps of large rosettes that will soon fill a clay pot. We like it.