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.