Is
tree sap dripping on your car or sidewalk? This is likely due to aphids
feeding on the leaves of your tree. Tree infestations of these soft
bodied insects have been quite heavy this year. This insect generally
feeds on the underside of the leaf and is hard to detect at first
glance. The insect secrets “honey-dew” which is the sticky substance
that drips off of the tree.
Will this kill the tree? This is most likely not to happen. However,
the infestation reduces the vim and vigor of the tree which makes it
harder to survive one of those tough winters that come along. It can
also cause premature leaf drop and reduce the aesthetic value of your
tree. Spraying the tree with an approved insecticide such as Malathion
will help control this particualr insect.