Propagation
Sow fresh seed during autumn in a prepared bed.

Divide suckers during spring.
Aerial layering is carried out during the growing period.

Botanic information
Leaf: The mid-green leaves are broad ovate to oval with a cordate base and an acuminate apex. The upper surface has prominent veins and both sides are pubescent particularly beneath. The petiole is pubescent and up to 12mm (½in) long.

Flower: The male and female flowers appear on the same plant before the leaves. The pendant male catkins up to 70mm (2¾in) long produce masses of yellow pollen, and the insignificant greenish female flower appear in a cluster towards the end of the branches during early spring. 

Fruit: The rounded nut has a fringed, greenish to brown hard outer husk with a leafy cup-shaped involucre. They are arranged solitary or in groups of four. The seeds are viable but the plant may be reproduced vegetatively.