Spec sheet
- Hardiness
- Hardy to zone 3
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Sizes we grow
Container grown (CG)
- #1
About this plant
Iris sibirica 'Sultan's Ruby', commonly known as Siberian Iris, is a striking perennial with a graceful, upright habit. It thrives best in USDA hardiness zones 3 through 9, making it suitable for a wide range of climates. This iris prefers well-drained soil and full sun to partial shade, flourishing in temperatures between 65°F to 80°F. 'Sultan's Ruby' showcases stunning purple, ruby-hued flowers that add vibrant color to any garden. It grows to a mature height of about 24 to 36 inches tall and is moderately resistant to deer, making it a reliable choice for gardeners dealing with browsing wildlife. Ideal for borders, water gardens, or naturalistic landscapes, this iris brings both elegance and vivid hues to any planting scheme.