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How Large Do Weeping Willows Get?

The weeping willow (Salix babylonica) is a native tree of western China, from whence it spread and naturalized on the banks of the Tigris and Euphrates rivers. The distinct, weeping form of the tree has earned it a spot among the most recognized trees in the world. Weeping willow trees have specific growth characteristics and grow to a certain size.
  1. Size and Form

    • Weeping willow trees grow to a mature height of 35 to 45 feet with an equal spread. The tree has a dense growth and fine texture and develops a symmetrical canopy with a smooth outline. The crown forms of weeping willows are quite identical. Certain weeping willow cultivars can grow up to 75 feet tall. The short trunk of the tree tends to droop with maturity. Regular pruning helps the tree develop a stronger structure.

    Description

    • A distinct characteristic of weeping willows is their fine-textured, weeping, drooping branches. The deciduous, lance-shaped foliage is up to 6 inches long and 1/2 inch wide. The olive green foliage has lighter, silver-shaded undersides. Some cultivars also feature bright, yellowish-green leaves. Branches are divided into slender, thin, pendulous stems. The dark gray bark is heavily furrowed. The inconspicuous, yellow flowers bloom in spring followed by 1/2-inch, dry or hard fruit.

    Growth Conditions

    • Plant the weeping willow in an area of full sun for best growth. Trees growing in low light are leggy and weak in growth. The tree is hardy in U.S. Department of Agriculture zones 4 to 9. Weeping trees grow optimally in a variety of moist soil types, including clay, loam, acidic or alkaline and do not prefer fast-draining, dry ground. A native of stream banks, the tree is well adapted to extended flooding and is highly tolerant of drought and salt.

    Planting Suggestions

    • Do not use the tree on smaller properties. The tree has aggressive roots that can grow extremely deep in search of water and can crack and clog pipes. Situate away from paving and driveways, as surface roots can cause cracks. The tree is among the first deciduous trees to lose foliage in fall. The tree can also prove to be messy with its continually shedding foliage and stems. Weeping willow has an average life of about 30 years. Avoid planting in high-wind, exposed sites as the brittle wood easily cracks in storms.