The curly willow tree is also referred to as a corkscrew willow, Salix matsudana 'Tortuosa', gaining its name from the twisted branches and twigs that extend from the tree.
Considered a small to medium-sized ornamental tree, the corkscrew willow grows to an upright height of nearly 30 feet, with a canopy width of 15 feet, according to the University of Florida Institute of Food and Agricultural Sciences. The branches are acutely angled and grow nearly parallel to the trunk.
How big a curly willow tree gets is dependent on issues like environment, soil conditions and weather. The tree reaches its maximum size and health potential when planted in USDA hardiness zones 4B through 8A. It possesses a fast rate of growth, which indicates a plant that grows in excess of 24 inches annually.
Scarlet Curls Willow
A curly willow is also sometimes called a Pekin willow or Hankow willow. A different cultivar of the corkscrew willow includes the Scarlet Curls willow, Salix matsudana x S. alba. The Arbor Day Foundation reports that this variety also reaches a height of 30 feet with a spread of 15 to 20 feet.