Roadside Raspberry

Rubus idaeus subsp. strigosus

Native to:
Canada, China, Kazakhstan, Labrador, Mexico, Prince Edward I., Russia, United States

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Rosaceae
Genus:
Rubus
Species:
Rubus idaeus subsp. strigosus
USDA Symbol:
RUAL7

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Subshrub
Height:
200 cm
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
may,jun,jul
Bloom Colors:
white
Landscaping Shrub:
Yes

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)
Butterflies & Moths:
★☆☆☆☆ Documented Lepidoptera association (GBIF)

Keystone Species Ranking

Caterpillar Keystone:
★★★★★ Butterfly & moth species supported by this genus (NWF)

Garden & Ecology Notes

Wildlife Value:
birds, small mammals, bees, butterflies
Fall Color:
yellow
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Resprouts vigorously from root crowns and rhizomes after fire. Often increases in abundance following disturbance.

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
consistently moist
Notes:
prefers organic matter-rich environments

Propagation & Germination

Stratification:
Warm then cold/moist stratification (double dormancy) — 90–120 days
Germination Time:
14–60 days
Notes:
Requires warm stratification (60-90 days) followed by cold stratification (90-120 days). Germination can be erratic.

The above propagation data sourced from Claude AI

Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).

Source: Claude AI