Iris ensata 'Royal Robes', commonly known as Royal Robes Japanese Iris, is a hardy perennial featuring large, dark purple flowers with ruffled edges and a small yellow throat, blooming in mid-summer. Thriving in full sun to partial shade and moist, acidic soil, this variety is perfect for borders, water gardens, and mixed beds. The rich, deep blooms of Royal Robes Iris add a luxurious and sophisticated accent to any landscape.