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Salix alba

Salix alba

Salicaceae · broadleaf deciduous tree · introduced

Last updated

Data Coverage 4 of 6 dimensions
Site Data
Threats
Cultivars
Phenology
GDD Thresholds
Puget Sound

White willow is a medium to large deciduous tree native to Europe, central Asia, and northern Africa, reaching 50-80 feet tall with erect branching and a loose, broad crown. Its bark is yellowish-brown; leaves are medium to dark green on the upper surface and silky white underneath (hence the name). The dioecious flowers appear in catkins in early spring.

Salix alba tolerates moist to wet soils and thrives in full sun, preferring neutral to alkaline conditions with good drainage. It is fast-growing but relatively short-lived and susceptible to multiple diseases including watermark disease, twig blight, rust, and canker. Several cultivars are available, including 'Tristis' (Golden Weeping) and 'Niobe', both prized for foliage effect and weeping form.

Quick Facts

Height
70 ft
Spread
32 ft
Growth Rate
Fast
Light
Full Sun
Soil
Wet Tolerant
Water
High
Hardiness
Zone Zones 4a–9b
Bloom Time
April to May

Phenological Calendar

Stage Typical Window
Bud break BBCH 07 Feb 15-Mar 15
Bloom start BBCH 61 Mar 1-Mar 31
Bloom end / petal fall BBCH 69 Apr 1-Apr 15
Leaf emergence BBCH 11 Mar 1-Apr 1
Fruit/seed development BBCH 71 Mar 15-May 31
Fall color / leaf senescence BBCH 93 Oct 1-Nov 15
Dormancy BBCH 97 Nov 15-Feb 28

Diseases (10)

Pests (14)

Cultivars (2)

'Tristis'
Common name: Golden Weeping Willow White WillowNiobe Weeping Willow; Mature height: 50–75 ft
Hardy to USDA Zone 4
'Niobe'