Dwarf Bilberry

Vaccinium cespitosum

Dwarf Bilberry

Dave Powell, USDA Forest Service, Bugwood.org

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Ericaceae
Genus:
Vaccinium
Species:
Vaccinium cespitosum

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Shrub , Subshrub
Height:
1-2 ft
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
may, jun, jul, aug
Bloom Colors:
White, Pink
Ground Cover:
Yes
Evergreen Shrub:
Yes

Native Range

United States: Alaska, California, Colorado, Idaho, Maine, Michigan, Minnesota, Montana, New Hampshire, New Mexico, Nevada, New York, Oregon, Utah, Vermont, Washington, Wisconsin, Wyoming, Canada: Alberta, British Columbia, Manitoba, New Brunswick, Nova Scotia, Northwest Territories, Ontario, Quebec, Saskatchewan, Yukon

Keystone Species Ranking

Caterpillar Keystone:
★☆☆☆☆ Based on number of butterfly and moth species using this genus as host plant (Source: National Wildlife Federation)
Bee Keystone:
★★★★☆ Based on number of native bee species using this genus for pollen and nectar (Source: National Wildlife Federation)

Host Plant for Caterpillars

Agriades rusticus, 🛑Behr's sulphur (Colias behrii), Clouded Sulphur (Colias scudderii), Epidemia mariposa, Freija fritillary (Clossiana freija), Idas blue (Lycaeides idas), Interior Sulphur (Colias interior)

Reported Fauna Sightings

Bees: Black-tailed bumble bee (Bombus melanopygus), Black-tailed bumble bee (Bombus melanopygus), Forest bumble bee (Bombus sylvicola), Forest bumble bee (Bombus sylvicola), Fuzzy-horned bumble bee (Bombus mixtus), Fuzzy-horned bumble bee (Bombus mixtus), Nevada bumble bee (Bombus nevadensis), Nevada bumble bee (Bombus nevadensis), Two-form bumble bee (Bombus bifarius), Two-form bumble bee (Bombus bifarius), Yellow-faced bumble bee (Bombus vosnesenskii), Yellow-faced bumble bee (Bombus vosnesenskii)

Soil Requirements

Soil Type:
sandy, acidic, nutrient-poor soil
pH:
4.5 - 6.0 (acidic to slightly acidic)
Drainage:
excellent drainage required
Moisture:
consistently moist
Notes:
thrives in open, sunny locations

Germination Information

Pre-treatment: Cuttings were re-cut and terminal buds were removed. Cuttings were treated with 2,000 ppm liquid IBA and placed in a mist bed with bottom heat. Cuttings were 4 cm in length and 5 mm cm in diameter.

Establishment: Softwood cuttings had significantly higher number and quality of roots compared to semi-softwood cuttings taken one month earlier. The plant is found from Alaska to California and east through the Rocky Mountains from B.C. to Alberta, south to New Mexico. and east across Canada to the Atlantic coast.

Source: npn.rngr.net