Drummond's Willow

Natural Habitat: Moist mountain environments – subalpine and montane riparian zones, streams, wet meadows, avalanche chutes; also on open slopes and foothills

Foliage / Flowers: Multi-stemmed deciduous shrub or small tree; leaves lance-shaped 0.8–3.5 in long, whitish-hairy beneath; catkins appear early spring (male 0.8–1.6 in, female up to 3.5 in), followed by seed capsules with silky hairs

Light Requirements: Full sun to partial shade

Growth Rate: Moderate to fast; prolific spring growth; regenerates readily from seed and stem fragments after disturbance

20-year Height: Typically 6–15 ft tall, spanning 6–12 ft

Elevation Range: 5,000–11,000 ft

Cold Hardiness: USDA Zones 2–5, tolerates approx –40 °F

Wind Tolerance: High – withstands exposure, wind, snow load, and resprouts after damage

Soil Preference: Prefers moist to saturated soils; thrives in silty, loamy, or organic-rich substrates along streams; tolerates seasonal flooding and cold conditions

Alkali / Saline Soil Tolerance: Low

Life Span: Typically 30–60+ years

Minimum Annual Precip: Thrives where annual precipitation (or snowmelt) is 20–30 in

Drought Tolerance: Low – requires consistent moisture and groundwater input

Windbreak Spacing: For riparian stabilization or dense shrub swaths, space 4–8 ft apart

Potential Pests / Disease: Susceptible to willow leaf beetles, aphids, sawflies, rust fungi, leaf cankers; but generally low impact in appropriate sites

Deer Resistance: Low – heavily browsed by deer, elk, moose, rabbits, beavers and other small mammals