Magnolia Tree

Question

An older Magnolia tree (about 8-9 years old) has suddenly started to turn brown and lose its leaves from the top of the tree. The tree is about 12-14 feet tall and seemed to be in great condition until about a week ago. About 5-6 feet of the upper part of the tree in turning brown. Except for watering the tree, we have done no other care to the tree.

Answer 1

It sounds like the tree has a fungus. I would treat the tree with a fungicide every 2-3 weeks for a few months. I personally like neem oil as a fungicide, as it is systemic and you do not need to be able to reach all parts of the tree in order for it to be effective.