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Long Tubed Iris
Iris macrosiphon
  
About Long Tubed Iris (Iris macrosiphon) 11 Nurseries Carry This Plant Iris macrosiphon (Long Tubed Iris) is a flowering plant in the Iridaceae (Iris) family, endemic to California in the Cascade Range Foothills, north and central Sierra Nevada Foothills, Inner North Coast Ranges, and San Francisco Bay Area, where it occurs in sunny grasslands, meadows, and open woodlands. The typical iris leaves are very slender, arching, strap-like, 2.5-5 millimeter wide, and blue-green in color. The flower is highly variable, from golden yellow to cream or pale lavender to deep blue-purple, generally with darker veins. In the wild it is usually found in clumps of the same general color. The flower stems are usually short (less than 25 centimeter) when in the sun and bear 2 flowers. It blooms in spring. It may go deciduous if subjected to summer heat or dryness.
Plant Description
Plant Type
Plant Type
Perennial herb

Size
Size
1 - 2 ft tall
1 ft wide

Growth Rate
Growth Rate
Moderate

Dormancy
Dormancy
Summer Semi-Deciduous, Winter Deciduous

Flower Color
Flower Color
Blue, Cream, Lavender, Pink, Purple, White, Yellow

Flowering Season
Flowering Season
Spring

Wildlife Supported
 
A variety of insects are attracted to the flowers

 
Butterflies & moths hosted ( 2 likely * ) SHOW ALL

Landscaping Information
Sun
Sun
Full Sun, Part Shade

Moisture
Moisture
Low

Summer Irrigation
Summer Irrigation
Max 2x / month once established

Nurseries
Nurseries

Ease of Care
Ease of Care
Moderately Easy

Cold Tolerance
Cold Tolerance
Tolerates cold to 15° F

Soil Drainage
Soil Drainage
Medium

Soil Description
Soil Description
Prefers damp loamy soil with plenty of organic matter. Soil PH: 6.0 - 8.0

Common uses
Common uses
Deer Resistant

Companion Plants
Companion Plants
Use as an understory with most native trees of northern California

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

Sunset Zones
Sunset Zones?
6*, 7, 8, 9, 14*, 15*, 16*, 17*, 18

Natural Setting
Site Type
Site Type
Open slopes of northern California as part of woodland, forest, grassland or meadow

Climate
Climate
Annual Precipitation: 18.0" - 154.7", Summer Precipitation: 0.20" - 5.95", Coldest Month: 10.8" - 52.0", Hottest Month: 34.1" - 77.6", Humidity: 0.12" - 24.64", Elevation: 7" - 14090"

Alternative Names
Common Names: Bowltube Iris, Ground Iris, Long-tubed Iris


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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