Purple Willow (Salix purpurea 'Nana') is a compact, deciduous shrub native to Europe and Northern Africa that has become a beloved solution for managing wet sites and stream erosion. Growing 3 to 5 feet tall and wide, this hardy woody plant thrives in Zones 4 through 8 and produces showy flowers in spring that attract butterflies and other pollinators. Its dense, upright-rounded form and tolerance for poor soils, clay, and even intermittent flooding make it an unusually adaptable choice for rain gardens and hedgerows where other plants struggle.
Full Sun
Moderate
4-8
60in H x 60in W
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High
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Purple Willow flourishes in the difficult spaces most shrubs reject: wet soils, clay, and seasonally flooded areas that would overwhelm conventional plantings. Deer pass it by entirely, and its spring flowers arrive in April and May with genuine visual impact while hosting butterflies. The shrub handles cool northern climates well and grows vigorously in poor, sandy, or alkaline soils where it prefers full sun and moderate moisture. Its shallow root system and tendency to shed twigs mean it requires regular attention, but gardeners rewarded with a resilient, pollinator-friendly hedge that stabilizes wet ground.
Purple Willow excels in hedgerows and rain gardens where its tolerance for wet soil and clay becomes an asset rather than a liability. Its dense branching and moderate mature size suit screening and informal barrier plantings, while its attraction to butterflies and bees makes it valuable for pollinator conservation. The shrub's ability to stabilize banks and handle seasonal flooding positions it as a functional choice for waterside restoration and bioswales.
No timeline data available yet for this variety.
Purple Willow is typically sold as a container shrub or bare-root stock. Transplant in spring or fall into prepared soil rich with compost. Space 3 to 5 feet apart depending on your desired hedge density. Water deeply after planting and maintain consistent moisture through the first growing season.
Prune Purple Willow in late spring after flowering concludes. Remove dead, damaged, or crossing branches, and thin out crowded growth to improve air circulation and reduce disease pressure. The shrub can become overgrown or disheveled over time if left unpruned, so annual maintenance encourages a compact, attractive form. Avoid heavy summer pruning in areas with high heat and humidity, as stressed plants become more susceptible to disease.
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“This cultivar descends from Salix purpurea, commonly called purple osier or basket willow, a species native across Europe, Northern Africa, and temperate central Asia into Japan. European craftspeople valued it for basketry and weaving for centuries. During the 19th and 20th centuries, North American land managers recognized its ecological role and introduced it specifically to reduce erosion along stream banks and lake shores, where it naturalized in moist lowlands, fens, swamps, and sandy depressions. The 'Nana' cultivar represents a compact selection, bred to bring that same erosion-control and pollinator-supporting function into residential gardens without the species' aggressive 9 to 18-foot spread.”