I wouldn't use the leaves... just me.  I wouldn't hesitate to use the dry or dead wood.  In fact, I would use it with maybe a bit of green until the green wood can dry out a bit.  Some folks don't like to use wood with the bark on, others use it however they get it.  I have a lot of pecan, maple, oak and cherry from making calls and strikers.  I just use offcuts from my woods, which have air dried in board form for 2-4 years.