Siberian iris is a tall, clumping plant with narrow, upright foliage. Plants grow best in moist, acidic soil but also tolerate drier soil. New for 2020: Peacock Butterfly ‘Miss Apple’ and ‘Uncorked.’ Height 30 inches. Spread 24-36 inches. Zone 3. Plant in full sun or part shade. Select ‘Florigen’s Choice’ to let us choose a variety of Siberian Iris for you!