Our Magnolia tree has black-colored leaves and some of the branches are losing their leaves. Whats wrong with it?
BOB: This sounds exactly like an insect infestation of Magnolia Scale [photo]. A black substance on the leaves indicates the presence of a sucking insect excreting honeydew. Black sooty mold grows on the honeydew giving the leaves a blackened appearance. Bees are attracted to these areas. Learn more about Magnolia Scale on our Pests webpage.