Compact white rockrose is a fantastic hybrid that gives this shrub several outstanding attributes. A dense compact habit heavily clothed in small deep green leaves. To just 3′ tall and 4′ wide forming a dome. This dense habit resists splitting in ice and snow. From May to July a massive constant procession of pure white flowers. Often bloom is so heavy that it obscures the foliage. Each flower lasts just a day but is replaced by a seemingly never ending supply. In autumn the spent flower calyxes turn bright orange red and are showy- especially when backlit by the sun. Great landscape shrub for hot sites in any well drained soil that does not become boggy. Avoid overly enriched soils for a more cold hardy and dense growing plant. Easy Cold hardy to near 5ºF. Little to no summer water.