Royal Robe. Klehm. 1995. American suffruticosa. Royal purple, semi-double tree peony. A seedling raised by Toichi Domoto. It has good substance, and is fragrant. Large blooms have internal petal ruffling. Excellent stem strength, 3 ft. plus or minus in Wisconsin. One bud per stem. Fertile seed producer and pollen. An excellent purple-violet selection. Foliage is large and deep blue-green. Ships late September to mid October.