Propagation
Sow fresh seed during spring in pots and place in a cold frame to germinate.

Hardwood cuttings taken during winter using callous box treatment, and grafted on to non suckering understock.

Note:
Care should be taken when selecting a sight as the tree has vigorous roots that can lift concrete and block drains.

Botanic information
Leaf: The leaves are deltoid to broad ovate with an acuminate apex, truncate base and a petiole up to 100mm (4in) long. It has 2 basal glands and the leaf turns a gold colour during autumn. The buds are imbricate up to 20mm (¾in) long with 7-scales.

Flower: The flowers are dioecious and appear solitary, inserted on the disk and accompanied by a bract. The reddish male flowers have up to 12-stamens and the greenish female has a single pistil . The flowers appear with new foliage in spring. 

Fruit: The dehiscent capsule has 3 to 4 valves. The seeds are covered in a mass of cotton-like hairs, thus the name Cottonwood. It may become a weed as it self-sows easily under favourable conditions and the small seeds are viable but the plant may be reproduced vegetative.