Del Norte County Iris, Iris innominata

About Del Norte County Iris (Iris innominata) 12 Nurseries Carry This Plant

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Del Norte County Iris is a perennial herb that is native to southern Oregon, and California along the north coast and Klamath Ranges in Del Norte County, California. It is a very small iris. It tends to grow in slopes, at elevations from 3300-4600 feet. The leaves are dense and evergreen, up to 20 cm. The flower can vary between a deep golden yellow with darker veins and a deep purple with lighter veins. The flower stems are about 12 cm and usually bear 1-2 flowers in spring. It spreads by rhizomes like other irises. Commonly sold in nurseries, often as hybrid Varieties: Iris innominata, used in gardens, does best in locations with cool, wet winters and warm, dry summers, in neutral or slightly acidic soil, with good drainage, and sun or partial shade. It is often used for hybridizing with other Iris species. Many plants sold under this name in nurseries are hybrids.

Plant Description

Plant Type

Perennial herb

Size

4.7 - 8.4 in tall

Dormancy

Evergreen

Fragrance

None

Flower Color

Purple, Yellow

Flowering Season

Spring

Landscaping Information

Sun

Part Shade

Moisture

Low

Summer Irrigation

Max 1x / month once established

Nurseries

Carried by 12

Ease of Care

Moderately Easy

Cold Tolerance

Tolerates cold to 20° F

Soil Drainage

Fast

Soil Description

Neutral or slightly acidic, good drainage. Soil PH: 5.0 - 7.0

Common uses

Groundcovers, Deer Resistant

Companion Plants

Rushes (Juncus species), spikerush (Eleocharis species), Sedges (Carex species), Red Columbine (Aquilegia formosa), California Grape (Vitis californica), Wild Rose (Rosa californica), ferns, lillies

Propagation?

It will reseed itself, but if other irises are in the area you may get unpredictable hybrids. To maintain a pure type, use cuttings from the rhizome, preferably in October. For propagating by seed: No treatment. Sow in early fall outdoors.

Sunset Zones?

4*, 5*, 6*, 7*, 8, 9, 14*, 15, 16, 17, 18*, 19*, 20*, 21*, 22*, 23*, 24

Natural Setting

Site Type

Slopes with well drained soil in Ponderosa Pine forest

Climate

Annual Precipitation: 67.2" - 155.6", Summer Precipitation: 2.27" - 5.87", Coldest Month: 36.0" - 45.5", Hottest Month: 54.1" - 68.3", Humidity: 0.27" - 16.91", Elevation: 120" - 6643"

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Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links: Jepson eFlora Taxon Page CalPhotos Wikipedia Calflora

Del Norte County Iris

Iris innominata

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Del Norte County IrisIris innominata

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Del Norte County Iris

Iris innominata