Salix alba
Salix alba
Salicaceae · broadleaf deciduous tree · introduced
Last updated
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
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 |