X Chitalpa tashkentensis
X Chitalpa tashkentensis is a hybrid between Chilopsis linearis and Catalpa bignonioides. It is deciduous with yellow autumn foliage. In the U.S.A. it is grown in hot, dry regions and is prized for its soft, green foliage and its flowers. Chitalpa, once established, should grow with minimal irrigation in the Melbourne area. It tends to have a multi-trunked, open, spreading habit and moderate growth rate and can be trained with short trunk if needed. Its flowers are borne in Summer and are trumpet-shaped and pale lilac with darker purple markings in the throat.
Typical mature height: 10m
Useful in: Parks, reserves, street tree if pruned carefully
Sites for best growth: Hot, dry sites, acid to slightly alkaline soi