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Iridaceae
Iris innominata
Iris innominata
Also known as Limniris innominata, Iris tenax subsp. innominata
Flowering Plants · Native Plants · Pacific Coast Iris · Native Iris · Iridaceae · California Native · Oregon Native · Shade Garden · Wildflower · Perennial · Spring Blooms · Pollinator
Del Norte iris is a beautiful Pacific Coast native iris prized for its variable yellow, lavender, and gold flowers that appear in late spring. It prefers part shade with humus-rich, well-drained, slightly acidic soil and consistent moisture during its active growing period. Once established it is relatively tough, but it benefits from light grooming and occasional division every few years to maintain vigor.
Growing conditions
The details behind the basics
- Daily light
- 4 hours
- Watering
- Water consistently to keep soil evenly moist, especially during the growing season; avoid waterlogging · Every 7-10 days
- Maintenance
- Moderate
- Soil
- sandy loam
- Soil pH
- 6–8
- Temperature
- -40°F to 95°F
- Cycle
- Perennial
Hardiness
USDA 3a-9b
Form & growth
Mature size and habit
- Mature height
- 12 in – 4 ft
- Spread
- 3 ft
- Spacing
- 18 in apart
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- Yes
- Foliage
- Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- California, Oregon
- Attracts
- Bees, Butterflies
Sources: trefle, usda
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