‘Plum Royale’ boasts shiny purple leaves all summer and is silver with a purple hint in winter. It combines well with silver foliage such as artemisia ‘Silver Mound’. Hardy to Zones 4 to 9, this variety features a mounding, compact habit and grows to 14 inches wide and 8 inches tall. ‘Plum Royale’ prefers part shade (full sun in the Pacific Northwest). Finish time in 4-inch containers is six to eight weeks.