The cultivar 'Tortuosa' is a small deciduous tree that has twisted ascending and pendulous branches that form a medium dome crown. It has bright green linear leaves that turn yellow in autumn and the greenish catkins appear with the new growth in spring.

Hardiness zones 7 to 10

Salix babylonica var .pekinensis is naturally found from China to east Asia growing along water courses in well drained fertile organic rich moist soils in an open sunny position and is frost tolerant but drought tender. 

The Corkscrew Willow is grown for its graceful habit and twisted foliage. It is planted in parks and gardens as a specimen or used along rivers for bank binding. It is suitable for coastal and inland regions establishing in 2-4 years and is long lived. It may also be used as a bonsai subject and the foliage is cut for floral arrangements. ID 357

Note:
Care should be taken when selecting a site allowing ample room for it to grow as it has vigorous roots that can lift concrete and block drains.

Salix (SĂ-liks) babylonica (bab-e-LON-ee-ka) var. pekinensis (pee-KIN-en-sis)

'Salix': Latin name for the willow (possibly from Celtic sal + lis - near water); 'matsudana': after the Matsu Tao area in China; 'Tortuosa': twisted.

syn. Salix (SĂ-lika) matsudana (măt-soo-DAH-na)

Salicaceae (sal-i-KAY-see-ee)
Willow and Poplar Family