Purpleflowering Raspberry

Rubus odoratus

Native to:
Canada, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Rosaceae
Genus:
Rubus
Species:
Rubus odoratus
USDA Symbol:
RUOD

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Subshrub
Height:
200 cm
Light Requirements:
Full Sun,Part Shade,Shade
Drought Tolerance:
Medium
Bloom Months:
jun,jul,aug
Bloom Colors:
pink, magenta, rose
Landscaping Shrub:
Yes

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)
Butterflies & Moths:
★☆☆☆☆ Documented Lepidoptera association (GBIF)
Caterpillars:
★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)

Keystone Species Ranking

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

Host Plant for Caterpillars

Blinded Sphinx (Paonias excaecata), Epinotia medioviridana, Io moth (Automeris io), Lettered habrosyne (Habrosyne scripta), wheatear sallow (Lithophane fagina)

Reported Fauna Sightings

Bees: Bombus Latreille, Brown-belted bumble (Bombus griseocollis), Common eastern (Bombus impatiens), Confusing bumble (Bombus perplexus), Tri-colored bumble (Bombus ternarius), Two-spotted bumble (Bombus bimaculatus)

Garden & Ecology Notes

Wildlife Value:
birds, bees, butterflies, small mammals
Deer Resistant:
Yes
Fragrant:
Yes
Fall Color:
yellow
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Resprouts vigorously from root crown and rhizomes following fire or cutting.

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
tolerates poor drainage
Moisture:
consistently moist
Notes:
prefers shaded or semi-shaded areas

Propagation & Germination

Stratification:
Cold/moist stratification required — 90–120 days
Germination Time:
14–60 days
Notes:
Seeds require cold stratification and may germinate erratically over several weeks. Light may improve germination rates.

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

ORGHPS Germination Guide: Sow @ 4C for 3 weeks, then place @ 20C.

Source: Ontario Rock Garden & Hardy Plant Society