Salix cordata, the sand dune willow, furry willow, or heartleaf willow, is a perennial shrub that grows 3 to 12 feet (0.91 to 3.66 m) tall; plants taller than 6 feet (1.8 m) are rare. The plant is native to the northeast regions of the North American continent; it is found on sand dunes, river banks, and lake shores in sandy, silty or gravelly soils.

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