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Giant Coreopsis
Leptosyne gigantea
  
About Giant Coreopsis (Leptosyne gigantea) 16 Nurseries Carry This Plant Giant Coreopsis is a woody perennial plant native to California and Baja California. The stem is a trunk 1-2 meters tall, 4-10 centimeters in diameter, occasionally branching. Bright green leaves and flowers are on the top of the trunk, the rest of the trunk is bare. The flowers are yellow, daisy-like, and 6-20 centimeters in size. It is summer deciduous, leaving a bare trunk in summer. It is distributed on the South California central coast, north and central Southern California coast, the California Channel Islands, and further south on Guadalupe Island, Mexico. Now becoming more common due to its use in revegetation projects.
Plant Description
Plant Type
Plant Type
Shrub, Succulent

Size
Size
3.3 - 8 ft tall
2 - 4 ft wide

Form
Form
Rounded, Upright Columnar

Growth Rate
Growth Rate
Moderate

Dormancy
Dormancy
Summer Deciduous, Winter Deciduous

Fragrance
Fragrance
None

Flower Color
Flower Color
Yellow

Flowering Season
Flowering Season
Winter, Spring

Wildlife Supported
 
Insects

 
Butterflies & moths hosted ( 1 confirmed , 3 likely * ) SHOW ALL

Landscaping Information
Sun
Sun
Full Sun

Moisture
Moisture
Extremely Low, Very Low

Summer Irrigation
Summer Irrigation
Never irrigate once established

Nurseries
Nurseries

Ease of Care
Ease of Care
Moderately Easy

Cold Tolerance
Cold Tolerance
Tolerates cold to 25° F

Soil Drainage
Soil Drainage
Fast, Medium

Soil Description
Soil Description
Prefers sand or sandstone. Soil PH: 5.0 - 7.0

Common uses
Common uses
Bank Stabilization, Hedges, Bee Gardens

Companion Plants
Companion Plants
Seacliff Buckwheat, Red Sand Verbena, Beach Sage, Beach Morningglory

Maintenance
Maintenance
Dried leaves may be removed in summer if desired

Propagation
Propagation?
May be propagated from cuttings taken in Winter.  For propagating by seed: No treatment.

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

Natural Setting
Site Type
Site Type
Coastal sage scrub or chaparral hillsides, dunes, and seabluffs. Prefers to be within a few miles of the coast

Climate
Climate
Annual Precipitation: 8.7" - 27.2", Summer Precipitation: 0.14" - 0.40", Coldest Month: 46.7" - 57.3", Hottest Month: 60.0" - 77.4", Humidity: 0.89" - 22.43", Elevation: -146" - 1900"

Alternative Names
Botanical Names: Coreopsis gigantea


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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