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Large Flowered Phacelia
Phacelia grandiflora
  
About Large Flowered Phacelia (Phacelia grandiflora) 5 Nurseries Carry This Plant Phacelia grandiflora is a species in the Boraginaceae known by the common name largeflower phacelia. It is native to the coastal hills and mountain ranges of southern California and Baja California, where it grows in coastal sage scrub, chaparral, and other local habitats, especially areas recently cleared by wildfire. It is an annual herb with a branching or unbranched erect stem reaching one meter in maximum height. It is hairy and coated in soft and stiff hairs. The leaves are up to 20 centimeters long with toothed, rounded or oval blades borne on long petioles. The large, hairy flower cluster is a one-sided curving or coiling cyme of widely bell-shaped flowers. Each flower is 2.5-4 centimeters wide and purple to blue in color, usually with a paler throat. The seeds germinate readily and the plant requires little care. Its height and long flowering season make it a standout in the dry garden.
Plant Description
Plant Type
Plant Type
Annual herb

Size
Size
1 - 3.3 ft tall

Form
Form
Upright Columnar

Growth Rate
Growth Rate
Fast

Fragrance
Fragrance
Fragrant - Pleasant

Flower Color
Flower Color
Blue, Lavender, Purple

Flowering Season
Flowering Season
Winter, Spring

Wildlife Supported
 
Very attractive to bees and other insects

 
Butterflies & moths hosted ( 9 likely * ) SHOW ALL

Landscaping Information
Sun
Sun
Full Sun

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
Fast, Medium

Soil Description
Soil Description
Typically sandy and/or rocky

Common uses
Common uses
Butterfly Gardens, Bee Gardens

Propagation
Propagation?
By seed, no treatment required.  For propagating by seed: No treatment may give some germination. Addition of a small amount of charate over the sown seeds greatly improves germination (Keeley and Keeley 1982).

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

Natural Setting
Site Type
Site Type
Open sandy places, especially those that have recently burned, in the vicinity of the coast of southern California

Climate
Climate
Annual Precipitation: 4.0" - 35.3", Summer Precipitation: 0.15" - 1.59", Coldest Month: 39.9" - 56.5", Hottest Month: 64.5" - 87.8", Humidity: 1.10" - 38.88", Elevation: 1" - 5871"

Alternative Names
Common Names: Giant-flowerd Phacelia, Large-flowered Phacelia, Largeflower Phacelia


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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