FRESH ROOTSTOCK: Ready to plant rootstock HARDY PERENNIALS: long blooming flowers that add vibrant colors to any space. CZ GUARANTEE: Buy with confidence from CZ Grain you are getting quality plants. Reach out with questions or concerns for a fast solution. Siberian Iris Roots (Iris sibirica) – Elegant, Hardy Blooms for Borders and Naturalized Gardens Add timeless beauty and graceful texture to your landscape with Siberian Iris roots. These easy-to-grow perennials produce slender, upright foliage and striking blue to violet flowers in late spring to early summer. Ideal for garden borders, water edges, and cottage-style plantings, they thrive in a range of soils and are low-maintenance once established. Botanical Name: Iris sibirica Bloom Time: Late spring to early summer Height: 24–36 inches Light Requirements: Full sun to partial shade Hardiness Zones: 3–9 Features: Deer-resistant, drought-tolerant once established, attracts pollinators Plant Siberian Iris roots for graceful, long-lasting color and structure in both formal and wild garden settings.