AusBonsai

A really good video from one of my favourite you-tubers (Nottingham Science)
Very interesting scientific explanation for leave colouring and fall.
http://www.youtube.com/watch?v=T-WfsgpB ... ature=plcp

<iframe width="560" height="315" src="http://www.youtube.com/embed/T-WfsgpB8G ... A&hl=en_GB frameborder="0" allowfullscreen></iframe>

Also I just found a playlist of different tree species from (Nottingham Science)
Chestnut
Hornbeam
Maple
Holly
Larch
Elm

http://www.youtube.com/playlist?list=PL3E28E3F38ACCE317

<iframe width="560" height="315" src="http://www.youtube.com/embed/videoserie ... 7&hl=en_GB frameborder="0" allowfullscreen></iframe>

While they are talking about fully ground grown trees, the science and information it helpful and transferable to some degree.