Shrubs🌿 Native to the NetherlandsVery hardy — tolerates frost down to -30°C

Common Osier

Salix viminalis

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Common Osier (Salix viminalis) is a native, deciduous willow species typically found along riverbanks, streams, osier beds, wet scrub, marshes, and willow thickets. The shrub is characterized by its very long, narrow leaves with revolute margins and silvery-hairy undersides. The long, yellow-green shoots are strong and flexible, and have traditionally been used for basketry, weaving, fencing, and living willow structures. In March and April, catkins appear shortly before the leaves emerge. Common Osier is dioecious: male and female catkins grow on separate plants. Both provide nectar, while only male catkins produce pollen. When pollinated, female shrubs form small capsules that burst open in May and June to release fluffy seeds. Common Osier is suitable for large, sunny gardens, natural areas, wet hedges, marsh edges, and banks where the soil does not dry out.

Year calendar

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
🌸Blooms
🐝Provides nectar
🍓Bears fruit
🍂Has autumn colour

Pruning period

✂️Best pruning period: Jan, Feb, Mar, Nov, Dec

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
✂️ Pruning period

Best pruning period

Common Osier tolerates hard pruning and can be coppiced regularly almost to the ground. Annual cutting stimulates the growth of long, straight, and flexible willow rods. For biodiversity, always leave sufficient older twigs, as catkins are formed on these. Otherwise, remove only dead, damaged, or crossing branches.

Botanical profile

Site & soil

Sun

Soil type: Clay, Sand, Loam, Peat, Humus-rich

Moisture need: Moist, Wet / marshy, Moderately moist

pH: Neutral (6.5–7.5), Slightly acidic (5.5–6.5)

Nutrient richness: Moderately nutrient-rich, Nutrient-rich

Humus content: Moderately humus-rich, Humus-rich, Peaty

Water drainage: Well draining, Moisture-retentive, Poorly draining

Appearance & season

Mature height: 300-600 cm

Bloom: Mar-Apr

Autumn colour: The leaves turn yellow to yellowish-brown in autumn before falling. The autumn color is usually short-lived and not particularly striking.

Properties

Salt sensitive: Yes

Edible: The young shoots and inner bark have historically been used as emergency food, boiled or ground and mixed with flour. They taste very bitter and are not particularly palatable. Therefore, Common Osier is not considered a standard food plant and culinary use is not recommended.

Scent: Flower scent: no distinct fragrance. The catkins attract early bees, bumblebees, hoverflies, and other insects primarily through nectar and, on male plants, large quantities of pollen.

Ecological value

Common Osier is a highly valuable host plant for the caterpillars of various butterflies, moths, and micro-moths. Sawflies, beetles, true bugs, aphids, and other specialized insects also live on the leaves, buds, twigs, and bark. The early-flowering catkins provide nectar and pollen when few other woody plants offer food. The dense branches provide nesting sites, shelter, and roosts for birds. Birds use the numerous caterpillars and other insects as a protein-rich food source for their young. Along banks, the roots and low branches provide hiding places for small animals and help bind the soil. Older trunks and dead wood are utilized by fungi, mosses, lichens, and small invertebrates.

Food web & Biodiversity

🐛 Caterpillars & mothsExtremely useful

🐝 Bees & bumblebeesExtremely useful

🪰 HoverfliesVery useful

🦋 ButterfliesVery useful

🪲 Beetles & insectsExtremely useful

🐦 BirdsVery useful

🐿️ MammalsUseful

🐞 Other animalsUseful

Common Osier is highly valuable due to its early catkins, which provide nectar and pollen to wild bees, honeybees, bumblebees, hoverflies, and other spring insects. The foliage and young shoots are utilized by numerous caterpillars, leaf beetles, and other insects. These animals serve as food for birds and bats. Furthermore, the dense branching provides nesting opportunities and shelter for birds and small mammals.

Distribution in the Netherlands