Iris siberica 'Silver Edge'Deciduous medium blue, wide petaled siberian iris with a white edge that grows into a thick clump over time. The flowers rise above the foliage 6-12" reaching around 30" in all in mid spring. Plant in full sun. Give average to good drainage. Cut back to the ground over winter. Easy to grow. Deer resistant. USDA zone 3-9 in cold hardiness.