Dendrobium canes?

[jenilee]

I know this is probably the dumbest question but I can't seem to find an answer so I'll ask

These Dendrobium canes: Are the short little ones with sort of a flakey skin coming off of them...are they the older canes that are no longer active? or are they new canes that will eventually grow up to have leaves and flower?....There has to be a transition between the leafy tall canes and the short leafless ones but I just don't know the timing and which comes first.

Do I have too many canes? Should I do this "division" thing? (and if the answer to that is yes, please tell me what it entails)...

Thanks so much! You are all so great to help newbies like me out!