Blackcap

Rubus leucodermis

Rosaceae · broadleaf deciduous shrub · native

Last updated

Blackcap (Rubus leucodermis), also called western raspberry, is a broadleaf shrub in the Rosaceae family native to western North America from Alaska to California, east to Utah and Montana. It reaches 6 ft tall with medium growth and produces white to pink flowers 2-3 cm across, solitary or in small clusters. It occurs in fields and on open to wooded hills.

Blackcap is hardy in zones 5a-8b and tolerates full sun to shade with moist soil (pH 4.5-8.5) and moderate water. Thirty-two diseases and 12 pests are documented. The fruit has a high edibility rating (4/5) and is gathered for fresh eating and preserves.

Plant Profile

Size & Form

Height
6 ft
Growth Rate
Medium

Site Requirements

Light
Full Sun to Shade
Soil Drainage
Moist
Soil pH
4.5-8.5
Water
Moderate
Hardiness
Zones 5a–8b

Ornamental Interest

Bloom Time
late spring
Origin
Pacific Northwest native
Watch for this season

Active Conidial Spread

Root Colonization Period

AphidHigh

Peak Population & Dispersal

Active Infection & Secondary Spread

+ 5 more — see full disease and pest lists below

Diseases: Regionally Documented (30)

Pests: Regionally Documented (12)

Data Maturity
Structured Multiple sources. Expert review underway.