Hello, I would like to know how long time for a Acer palmatum atropurpureum starts to give seeds. Ciao.
A long, long time Sometimes. I have a nice little Acer palmatum f.atropurpureum that has been in the ground for about 17 years and I have yet to see any seed production. It is healthy and all, just unproductive in regard to seed.
Some of my trees produce seed readily, and some are very reluctant, or have yet to produce any In the garden, patience is the name of the game