I have a Negronne tree, which was also called a VdB, but it's one trunk and is tall. It doesn't exhibit dwarf growth at all. It's only a year old. Must have been a tip cutting because it's tall and straight--Very nice-looking little tree, but no branches, which is all right with me for now. I just expected it to be lower and branchy. I can't see any brebas coming out on it so far.
noss