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Common Sun Rose
Crocanthemum scoparium
  
About Common Sun Rose (Crocanthemum scoparium) 12 Nurseries Carry This Plant Crocanthemum scoparium is a species in the Cistaceae (Rockrose) family which is endemic to California. There may be some taxonomic confusion about this species, and some sources include it in the genus Helianthemum. Its common names include Peak Rockrose and Peak Rushrose. There are two recognized varieties, both uncommon. This is a small perennial shrub bearing long, smooth stems and small flowers each with five bright yellow petals. It is found in dry, sandy areas in hills and low mountains primarily along the coast from the Bay Area southward, with a concentration in San Diego County. It should be noted that there are many non-native varieties of Cistus that are commonly available in nurseries; almost all are commonly called Rock Rose or Sun Rose.
Plant Description
Plant Type
Plant Type
Shrub

Size
Size
1.5 ft tall
1.5 ft wide

Dormancy
Dormancy
Summer Semi-Deciduous

Flower Color
Flower Color
Yellow

Wildlife Supported
 


 
Butterflies & moths hosted ( 1 likely * ) SHOW ALL
*
Anavitrinella pampinaria Image
Common Gray Anavitrinella pampinariaAnavitrinella pampinaria

Landscaping Information
Sun
Sun
Full Sun

Moisture
Moisture
Very Low

Summer Irrigation
Summer Irrigation
Max 1x / month once established

Nurseries
Nurseries

Ease of Care
Ease of Care
Moderately Easy

Cold Tolerance
Cold Tolerance
Tolerates cold to 5° F

Soil Drainage
Soil Drainage
Fast, Medium

Soil Description
Soil Description
Tolerates a variety of soils. Tolerates Serpentine Soil. Soil PH: 5.0 - 7.0

Companion Plants
Companion Plants
Can be used with a wide variety of plants requiring full sun and relatively dry conditions, including Manzanita (Arctostaphylos sp.), Ceanothus sp., Sage (Salvia sp.), Yucca (Hesperoyucca whipplei or Yucca shidigera) and various cactus species.

Propagation
Propagation?
For propagating by seed: No treatment; oven heat of 248°F for 5 mins. before sowing nearly doubles germination (Keeley and Keeley 1982).

Natural Setting
Site Type
Site Type
Dry, sandy, rocky slopes and ridges

Climate
Climate
Annual Precipitation: 7.0" - 66.9", Summer Precipitation: 0.14" - 2.67", Coldest Month: 33.5" - 57.7", Hottest Month: 58.6" - 81.2", Humidity: 0.01" - 29.54", Elevation: -3814" - 7419"

Alternative Names
Botanical Names: Helianthemum scoparium
Common Names: Bisbee Peak Rushrose, Broom-rose, Common Sun-rose, Peak Rockrose, Peak Rush-rose


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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