Taxonomy

Division:

Magnoliophyta | - Flowering plants

Family:

Rosaceae

Genus:

Rubus

Species:

Rubus × biformispinus

USDA Symbol:

RUBI3

Growth Characteristics

Life Cycle:

Perennial

Growth Habit:

Subshrub

Height:

150 cm

Light Requirements:

Full Sun

Drought Tolerance:

Medium

Bloom Months:

may,jun,jul

Bloom Colors:

white

Keystone Species Ranking

Caterpillar Keystone:

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

Garden & Ecology Notes

Wildlife Value:

birds, small mammals

Fire Ecology:

Fire adapted — tolerates or benefits from fire

Fire Notes:

Resprouts vigorously from root crowns following fire; colonizes disturbed sites.

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:

Cold/moist stratification required — 90–120 days

Germination Time:

14–60 days

Notes:

Rubus seeds often have erratic germination; cold stratification improves rates.

The above propagation data sourced from Claude AI