Jon: I had similar situation with a terminal cutting (which was one of a kind for me) which had roots but no leaves, and the terminal buds stayed green for more than a month but would not open. After more than a month in this situation, I got impatient and cut the top green bud. I thought that the top bud could be defective to open so if the apical/epical dominant node (top bud) is removed, another bud may start greening up. Well, instead mold had appeared at the top end. Yes, patience would have been better and more so in my case with limited access to cuttings.