Propagation
Seeds require a warm-cold period for 3 to 5 months prior to sowing and then placed in an open frame to germinate. 

Soft tip cuttings of non-flowering shoots during the growing period. Plant up in early spring with the new growth.

Botanic information
Leaf: The thin textured leaves are broad ovate to obovate up to 130 mm (5⅛ in) wide with a biserrate to crenate-serrated margin. The apex is acute and the base is cordate with a petiole up to 25 mm (1 in) long. During autumn leaves turn yellowish-green before falling.

Flower: The long cylindrical male pendant catkins appear in small clusters during early spring. The inconspicuous female catkins appear at the same time and are pollinated by wind. Both flowers are found on the same tree (monoecious).

Fruit: The rounded nut is up to 17 mm (⅝ in) in diameter and is greenish-brown with a hard outer husk and a leafy cup-shaped pubescent involucre that is up to 50 mm (2 in) long. They are arranged solitary or in groups of three and mature during autumn. The small seeds are viable but the plant may be reproduced vegetatively.