Carried by 7 nurseries
View Availability at NurseryData provided by the participants of the Consortium of California Herbaria
View additional distribution information on the Jepson eflora
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.
Shrub
2 ft Tall
2 ft Wide
Summer Semi-deciduous
Yellow
Full Sun
Very Low
Max 1x / month once established
Moderate
Tolerates cold to 5° F
Fast, Medium
Tolerates a variety of soils.
Tolerates serpentine soil..
Soil PH: 5.0 - 7.0
For propagating by seed: No treatment; oven heat of 248°F for 5 mins. before sowing nearly doubles germination (Keeley and Keeley 1982).
Dry, sandy, rocky slopes and ridges
Chaparral, Closed-cone Pine Forest, Coastal Sage Scrub, Northern Coastal Scrub
Can be used with a wide variety of plants requiring full sun and relatively dry conditions, including Manzanita (Arctostaphylos spp.), Ceanothus spp., Sage (Salvia spp.), Yucca (Hesperoyucca whipplei or Yucca shidigera) and various cactus species.
Butterflies and moths supported
0 confirmed and 1 likely
Common Gray
Anavitrinella pampinaria