Douglas Iris
Iris Douglasiana
Overview
Iris douglasiana, commonly known as Douglas Iris, is a hardy, evergreen perennial thriving in USDA zones 7-9. Preferring partial shade, it boasts vibrant purple-blue flowers with yellow-white markings, blooming from April to June. With a mature height of 12-18 inches and spread of 12-24 inches, it adds color and texture to coastal gardens, woodland settings, and mixed borders. This low-maintenance native adapts well to various soils and tolerates seaside conditions.
Sun HalfWater Extra in Summer, MediumZones 8–10Type PerennialClimate Mediterranean
Culture
- Sun
- Half
- Water
- Extra in Summer, Medium
- USDA zones
- 8–10
Shape & size
Classification
- Type
- Perennial
- Family
- Iridaceae
- Climate
- Mediterranean
See full data, regional cultivation notes, and design tools. Build a client presentation around this plant.
Start your 14-day trialPhotos (24)
























Photographs by 4 contributors
- Franz Xaver, CC BY-SA 3.0 · source
- John Rusk from Berkeley, CC BY 2.0 · source
- peganum from Henfield, England, CC BY-SA 2.0 · source
- Doug McGrady from Warwick, RI, USA, CC BY 2.0 · source
Related plants

Perennial
African Iris
Dietes Iridioides
FullUSDA 3–11

Perennial
Angel's Fishing Rod
Dierama Pulcherrimum
HalfUSDA 7–10

Perennial
Angel's Fishing Rod
Dierama Igneum
HalfUSDA 7–10

Perennial
Apostle Plant
Neomarica Caerulea
HalfUSDA 7–9

Bulb
Autumn Crocus
Colchicum cilicicum
FullUSDA 3–8

Bulb
Baboon Flower
Babiana Stricta
HalfUSDA 9–10