Silver Bush is a superb showpiece plant or may be mass-planted in a minimal maintenance garden because of its large, white flowers and silvery green leaves. Popular evergreen rounded shrub with spring and summer blooms that is great for rockeries, pots, and general gardening.The Convolvulus cneorum Silver Bush is a popular plant suitable for both indoor and outdoor areas with Full Sun, Semi Shade. The plant has silvery green leaves. The Silver Bush is an ideal plant for a beginner or easy-going plant to add to your collection.