Plant Description
Iris tenax
Oregon Iris is a native iris species that produces similar flowers to commercial varieties. Its flowers are purple or blue; occasionally almost white. There are several invasive iris species, such as yellow flag iris, so Oregon Iris is a great alternative to those species! Another common name for Oregon Iris is Toughleaf Iris.

An Oregon Iris in bloom.
PLANT CHARACTERISTICS
Characteristic | Plant Information |
---|---|
Height | Up to 1 ft |
Growth Rate | Moderate |
Life Cycle | Perennial |
Moisture Use | Moderate |
Drought Tolerance | High after initial establishment |
Deer Browse | No |
Wildlife Value | Good for insect pollinators, other beneficial insects, hummingbirds, and other birds and mammals |
Hardiness | USDA Zones 6-9 |
Bloom Time | March-July |
Bloom Color | Most commonly purple, sometimes blue, rarely white |
Habitat Type | Meadows, streambanks, rock gardens |
SCIENTIFIC CLASSIFICATION
Classification | Scientific Name |
---|---|
Kingdom | Plantae |
Clade | Angiosperms |
Clade | Monocots |
Order | Asparagales |
Family | Iridaceae |
Genus | Iris |
Species | I. tenax |