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Iris missouriensis

Iris missouriensis is a clump-forming, deciduous, rhizomatous perennial belonging to the Iridaceae family of plants. It is also known as Iris tolmieana, Iris montana, Western Blue Flag, Rocky Mountain Flag, Missouri Flag, It is native to western North America and Mexico. The name missouriensis is in reference to the Missouri River where it was first discovered at the banks by Lewis and Clark, in 1806.

Iris missouriensis
Iris missouriensis

Iris missouriensis has long narrow sword-shaped leaves. It can grow to 50cm or 20in. It flowers in spring around May, June, and has pale lilac flowers but has strongly veined petals. Cut down flower stems after flowering. Each plant bears one to four flowers.

Iris missouriensis
Iris missouriensis

Grow Iris missouriensis in the sun or partial shade. Plant in slightly acid, fertile but well-drained soil. It tolerates wet soil and is considered a wetland plant. Propagate by division in autumn. Watch out for slugs, snails, thrips, and grey molds. It is deer-tolerant.

Native Americans have used Iris missouriensis in traditional medicine, for toothaches, the Navajo for emetic, and Zuni for strengthening babies.

Iris missouriensis
Iris missouriensis

About Online Flower Garden & Dino

I am a flower enthusiast and a gardener at heart. Ever since childhood I loved reading about plants and started gardening at an early age. First by helping my father in the garden and later managing a large garden myself in my teen years. I planted and cared for a large number of plants, flowers, and trees both outdoors and in a greenhouse. To this day I enjoy visiting gardens and parks and learning about new and old specimens and varieties of plants.

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