14+ Magnolia Leaves Turning Brown In Summer. Three such possible reasons are presented below, along with if the browning appears in summer, inadequate watering may be the cause of brown leaves, although high winds could also be the culprit (they dry. However, when this happens in any other season, it could be due to high winds that dry out the foliage, frost damage during spring or inadequate watering during summer.
My magnolia tree is turning brown.
Yellow and brown the leaves are falling over the town. Any uncovered area will still turn brown. That's right…the red, yellow, gold and orange colors are hiding in the leaves all summer long. We have 3 planted on the north side of our house.