Answer: Corkscrew Hankow Willow, or Salix matsudana 'Tortuosa' is a tree 30-50 ft high with upright spreading, contorted and twisted branches from China and Korea. It was introduced in 1923 and is hardy in zones 4-8. 'Pendula' is a weeping form. There alsoexists a hybrid between 'Tortuosa' and Salix alba 'Tristis' called 'Golden Curls'. It is easy to grow, likes full sun, moist soil and zone 5 and warmer conditions..
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