Propagation
Stratify fresh seeds for 2 to 3 months at 5º C (41ºF) then sow in spring and maintain a temperature of 12º to 15º C. (55º to 59º F).

The cultivars are budded during summer.

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 palmate leaves have 5-triangular lobes with coarsely serrate margins (plane-like) and are slightly hairy underneath and turn yellow to brown during autumn. The greenish buds are terminal, imbricate and up to 7mm (¼in) long retaining their colour throughout winter.

Flower: The small crateriform flowers appear with new growth during spring and are arranged in pendant panicle that is up to 120mm (4¾in) long.

Fruit: The green twin samara have 2 reddish wings that are arranged at an acute angle and appear in weeping clusters. The seeds are very viable and plant self-seeds easily becoming a weed.