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Central Coast Iris
Iris longipetala
  
About Central Coast Iris (Iris longipetala) 9 Nurseries Carry This Plant Central Coast Iris (Iris longipetala) is a rare native perennial herb that is found in the wild only in the counties surrounding the Bay Area. It is included on CNPS list 4.2. It tends to grow in moist open places, at elevations from 0-1,500 feet. This Iris is a good garden performer with large flowers and a pleasant fragrance. It is recommended for gardens on the central and northern coast.
Plant Description
Plant Type
Plant Type
Perennial herb

Size
Size
2 ft tall
2 ft wide

Form
Form
Upright

Dormancy
Dormancy
Summer Semi-Deciduous

Fragrance
Fragrance
Fragrant - Pleasant

Flower Color
Flower Color
Blue, Lavender, Purple, White

Flowering Season
Flowering Season
Spring

Wildlife Supported
 


 
Butterflies & moths hosted ( 2 likely * ) SHOW ALL

Landscaping Information
Sun
Sun
Shade, Part Shade

Moisture
Moisture
Low, Moderate - High

Summer Irrigation
Summer Irrigation
Irrigate ~ 1 / wk once established

Nurseries
Nurseries

Ease of Care
Ease of Care
moderately easy

Cold Tolerance
Cold Tolerance
Tolerates cold to 0° F

Soil Drainage
Soil Drainage
Medium, Slow

Soil Description
Soil Description
Prefers clay soil. Soil PH: 5.0 - 8.0

Common uses
Common uses
Bogs and Ponds, Deer Resistant

Companion Plants
Companion Plants
Use with other perennial herbs and annuals of the central and northern coast that share its moisture and soil preferences, such as Milkmaids (Cardamine californica), Cobwebby Thistle (Cirsium occidentale), Clarkia sp., Larkspur (Delphinium sp.), Checkerbloom (Sidalcea sp.), and geophytes such as Mariposa Lily (Calochortus sp.), Fritillaria sp., and Lilium sp.

Propagation
Propagation?
For propagating by seed: No treatment. Sow in early fall outdoors.

Sunset Zones
Sunset Zones?
4*, 5*, 6*, 7, 14, 15*, 16*, 17*, 19, 20, 21, 22, 23, 24

Natural Setting
Site Type
Site Type
Moist open places along the central coast

Climate
Climate
Annual Precipitation: 16.6" - 81.3", Summer Precipitation: 0.22" - 1.44", Coldest Month: 36.3" - 51.3", Hottest Month: 54.0" - 74.9", Humidity: 0.26" - 22.42", Elevation: 10" - 7994"


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


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