Maple Tree Nursery, Barnham, West Sussex. Compact, rounded, bushy shrub with silky silver leaves.Funnel-shaped white flowers with yellow centres are borne from pink buds from late spring, on into the summer. They originate from the Mediterranean, and thrive in a hot, sunny border. They are frost hardy to about -5C, but they do not do well in wet conditions. Shelter them from icy winter winds. They will form a bush about 60cm (2 foot) high by 90cm (36 inches) wide.