Botanical Name

Iris tenax

Commonly known as Oregon Iris

Iris tenax (Oregon Iris)
Perennial

Small purple iris flowers with yellow signals on wiry stems. A tough, underappreciated Pacific Northwest native.

Quick Reference
Bloom Season
Apr to May
USDA Zones
6-8
Sun
Full Sun or Part Sun
Water
Moderate - regular watering
Mature Height
8-16"
Bloom Colors
PurpleLavenderWhiteYellow
Native Species Deer Resistant Pollinator Friendly
Read the full Oregon Iris growing guide →

Companion plants, planting tips, FAQ, and more

About This Name

Iris tenax is the scientific name used by botanists, nurseries, and seed catalogs to identify Oregon Iris unambiguously. The genus Iris places it within a specific plant family, and using the botanical name avoids the confusion that comes with regional common names. If you're shopping for Oregon Iris, looking up plant care details, or comparing varieties, searching by Iris tenax will give you the most precise results.