White Willow

Salix alba

Native to:
Afghanistan, Albania, Algeria, Austria, Baltic States, Belarus, Belgium, Bulgaria, China, Corse, Cyprus, Czechia-Slovakia, East Aegean Is., France, Germany, Greece, Hungary, Iran, Iraq, Italy, Kazakhstan, Kriti, Krym, Lebanon-Syria, Morocco, Netherlands, North Caucasus, NW. Balkan Pen., Palestine, Poland, Portugal, Romania, Russia, Sardegna, Sicilia, Spain, Switzerland, Transcaucasus, Tunisia, Türkiye, Turkmenistan, Ukraine, Uzbekistan

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Salicaceae
Genus:
Salix
Species:
Salix alba
USDA Symbol:
SAAL2

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Tree
Height:
2500 cm
Light Requirements:
Full Sun
Drought Tolerance:
Low
Bloom Months:
apr,may
Bloom Colors:
yellow, green

Keystone Species Ranking

Caterpillar Keystone:
★★★★★ Butterfly & moth species supported by this genus (NWF)
Pollen Specialist Bee Keystone:
★★★★★ Native pollen specialist bee species supported by this genus (NWF)

Host Plant for Caterpillars

Beautiful Yellow Underwing (Anarta myrtilli), Ceanothus Silkmoth (Hyalophora euryalus), Cecropia moth (Hyalophora cecropia), Clostera cupreata, Columbia silk moth (Hyalophora columbia), Eversmann's rustic (Actebia fennica), fall cankerworm (Alsophila pometaria), Gypsy moth (Lymantria dispar), Hickory Tussock Moth (Lophocampa caryae), Io moth (Automeris io), Meroptera pravella, Micrurapteryx salicifoliella, Mother Underwing (Catocala parta), Phyllonorycter salicifoliella, Red-humped caterpillar moth (Schizura concinna), White Satin Moth (Leucoma salicis)

Garden & Ecology Notes

Wildlife Value:
birds, bees, butterflies, small mammals
Fall Color:
yellow
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Resprouts vigorously from the root crown and stump after fire or cutting damage.

Soil Requirements

Soil Type:
moist, fertile, well-drained loam
pH:
5.5 - 8.0 (slightly acidic to alkaline)
Drainage:
tolerates poor drainage
Moisture:
consistently moist
Notes:
Commonly found near rivers and wetlands

Propagation & Germination

Stratification:
None required
Germination Time:
7–28 days
Notes:
Seeds are very short-lived (days to weeks) and require immediate sowing on moist soil with light exposure. No pretreatment needed.

The above propagation data sourced from Claude AI