@Arico, sorry to confuse. Some trees are compartmentalized, so If you disturb the roots the whole tree connected to that root dies. Like a maple will do. Root dies, branches die connected to that root. I personally have never seen an oak respond to root damage that way, but our Water Oaks ( Quercus nigra) are not one I have much experience with. I couldn't find zip about the answer I wanted, so asked about it here. Mostly I find answers in the Florida section about water oaks.
