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Branching Phacelia
Phacelia ramosissima
About Branching Phacelia (Phacelia ramosissima) Nurseries Show All Photos Phacelia ramosissima is a species in the Boraginaceae (Borage) family known by the common name Branching Phacelia. It is native to western North America from British Columbia to the southwestern United States, where it can be found in many types of habitats. It is variable in appearance, and there are many intergrading Varieties: In general it is a spreading or sprawling prostrate or upright perennial herb which may approach 1.5 meters in stem length. It is hairless to densely hairy, and some people detect an unpleasant odor from the glandular hairs. The leaves are 4 to 20 centimeters long and most are divided into several toothed or lobed leaflets. The flower cluster is a one-sided curving or coiling cyme of funnel- or bell-shaped flowers. Each flower is under a centimeter long and white to lavender in color with protruding stamens.
Plant Description
Plant Type
Annual herb, Perennial herb

Max. Height
1 - 4 ft (0.3 - 1.2 m)

Max. Width
1.5 ft (0.5 m)


Fragrant - Unpleasant

Summer Deciduous

Flower Color
Lavender, White

Flowering Season
Spring, Summer

Native Status

Natural Setting
Site Type
Found in various settings including dunes, edges of salt marshes, coastal bluffs, canyons, washes, flats, meadows, and conifer forests

Part Shade

Elevation ?
-228' - 10581'

Annual Precip. ?
3.4" - 76.8"

Summer Precip. ?
0.15" - 3.48"

Coldest Month ?
23.5° F - 61.5° F

Hottest Month ?
45.8° F - 88.0° F

Humidity ?
0.41 vpd - 41.64 vpd

Soil Description
Prefers sand or sandstone

Soil PH
4.0 - 8.0

Fast, Standing

Cold Tolerance(° F)
Tolerates cold to -10° F

Sunset Zones ?
14, 15*, 16*, 17*, 22, 23, 24*

Companion Plants
Due to its wide distribution, it can be used with virtually any coastal, chaparral, sage scrub, or woodland plants

Landscaping Information
Ease of Care
Moderately Easy

Water Requirement ?
Extremely Low
Very Low
Moderate - High

Common uses
Butterfly Gardens, Bee Gardens

Nursery Availability
Commonly Available

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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