Training Young Community Trees

What does that mean?

Why is it done?
Amur maple after training for structure
                                                                      Amur maple after being trained for scaffold branches

How is it done? When is it done? Where can I get more information?

ISA, "Pruning Young Trees."  For other information, advice and help on this topic, call offices of your State Urban Forestry Coordinator or University Extension service, or visit urban forestry web sites.