Propagation
Sow seeds when ripe in situ or in a container and place in an open frame. Germination will occur during spring, prick out and pot up and place outside to harden off.

Botanic information
Leaf: The leaves are ovate to obovate with 5-shallow broad lobes that have an abrupt acuminate apex. They have a cordate base and the leaves are up to 127mm (5in) wide. 

The red-green petiole is slender and is up to 150mm (6in) long. The glabrous dark green leaves are pubescent on the underside when young and during autumn turn yellow before falling.

Flower: The unisexual crateriform flowers have 5-sepals and 5-petals with 4-10 stamens and are arranged in a pendulous corymb or umbel that appears with new foliage during spring.

Fruit: The glabrous reddish brown twin samara has wings that diverge at right angles or less and are arranged in a pendant cluster. 

General information on pruning Acer species 
The Maples normally do not require regular pruning apart from damaged, diseased or dead wood removal and this should be carried out from autumn to winter. 

Pruning in late winter or spring may result in bleeding of the sap and should be avoided. Remove reverted branches in variegated trees and clean up split bark with a sharp knife and allow natural healing.