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California Ash
Fraxinus dipetala
  
About California Ash (Fraxinus dipetala) 6 Nurseries Carry This Plant Fraxinus dipetala (California Ash or Two-petal Ash) is a species of ash in the Oleaceae (Olive) family native to northwestern Arizona, California, southern Nevada, and Utah, and northern Baja California. In California it is found in the Coast Ranges, Sierra foothills and Peninsular Range at elevations of 100-1,300 meters. It is a deciduous shrub or small tree growing to 7 meters tall, with cylindrical to four-angled stems. The leaves are 5-19 centimeter long, light to dark green, with three to seven (rarely nine) leaflets 1-7 centimeter long, thick, and serrated along the margins. The flowers have two white lobe-shaped petals 2.5-4 millimeter long, and are sweetly scented, hanging in fluffy clusters; unlike many ashes, they are bisexual, not dioecious. The fruit is a long, flat samara 2-3.2 centimeter long and 5-9 millimeter broad, green when immature and hanging in bunches.
Plant Description
Plant Type
Plant Type
Tree

Size
Size
23 ft tall
15 ft wide

Dormancy
Dormancy
Winter Deciduous

Fragrance
Fragrance
Fragrant - Pleasant

Flower Color
Flower Color
Yellow, White

Flowering Season
Flowering Season
Spring

Wildlife Supported
 
Butterflies are attracted to plants in the Fraxinus genus, including the Pale Swallowtail, Two-tailed Swallowtail, and Western Tiger Swallowtail butterflies which use it as host plant

Landscaping Information
Sun
Sun
Full Sun, Part Shade

Moisture
Moisture
Very 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
Fast, Medium, Slow

Soil Description
Soil Description
Tolerates a variety of soils including clay and decomposed granite. Tolerates Serpentine Soil. Soil PH: 5.9 - 8.2

Common uses
Common uses
Bank Stabilization, Bird Gardens

Companion Plants
Companion Plants
Use with other woodland shrubs such as Manzanita (Arctostaphylos manzanita or viscida), Spice Bush (Calycanthus occidentalis), Ceanothus sp., Redbud (Cercis occidentalis), Oaks (Quercus sp.), and Currant/Gooseberry (Ribes sp.)

Propagation
Propagation?
For propagating by seed: 3 mos. stratification.

Sunset Zones
Sunset Zones?
7*, 8*, 9*, 14*, 15*, 16*, 17, 18*, 19*, 20*, 21*, 22*, 23*, 24

Natural Setting
Site Type
Site Type
Slopes

Climate
Climate
Annual Precipitation: 4.2" - 73.0", Summer Precipitation: 0.14" - 2.35", Coldest Month: 34.3" - 55.2", Hottest Month: 59.0" - 83.1", Humidity: 0.75" - 34.79", Elevation: 36" - 6571"

Alternative Names
Botanical Names: Fraxinus jonesii
Common Names: Flowering Ash, Foothill Ash, Two-petaled Ash


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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