silver maple not growing well
I planted 2 silver maples a few years ago. one is thriving, it is full of leafs and has grown alot. the other has given me problems since the beginning. it grew but the leafs are not growing. they started looking brown on the ends, then they began to fall on the top of the tree. now the good tree has leaves and the one giving me problems does not show signs of any growing on the tree. there are new branches at the bottom of the tree but nothing on the top. what should i do?