Propagation
Sow fresh seeds during spring in containers and maintain a temperature of 10ºC (50ºF). Collect seeds from best colour tree and seedlings may be used as an understock for grafting improved forms.

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.

Botanic information
Leaf: The glabrous leaves have 3-triangular lobes with acute apex and are up to 85mm (3½in) wide. The side lobes are pointing forward and the leaf has 3-prominent veins. The margin may be slightly serrated towards the apex and turns orange-red during autumn before falling.

Flower: The small greenish-yellow flowers appear with the new foliage and are arranged in a umbel-like corymb that appears during spring.

Fruit: The twin samara are fused at the ovaries and have membranous wings. They appear in weeping clusters at the end of the branches.