* Anthracnose attacks sycamores and many oaks. It generally appears first as small, irregular yellow or brown spots.
* Oak Wilt is one of the most serious tree diseases. Leaves on diseased trees develop yellow veins that eventually turn brown. The tree may begin to rapidly defoliate. Dutch Elm Disease and Verticillium Wilt exhibit similar symptoms.
* Cottony Maple Scale, found primarily on maples and lindens, is
Cottony Maple Scale
actually a scale insect. It produces a white, cotton-like mass that resembles popcorn, many of which line up on the branches and twigs.
* Magnolia Scale, another scale insect, begins as an over-wintering nymph that is
dark gray-black and clusters together in large numbers on branches.
* Emerald Ash Borers are beetles, and the adults are bright metallic-green beetles with flat backs and about 1/2" long.
* Honeylocust Plant Bugs are leaf-eating bugs which can cause
Honeylocust Plant Bugs
the tree to appear in decline and die back.
* Japanese Beetles are metallic-green leaf eating insects that prefer Lindens, Purple Plums and White Birch.
* Bagworms are most prevalent on Spruce
and Arborvitaes and can be identified by their small cocoons that dangle from limbs.
* Gypsy Moths are very colorful caterpillars with five pairs of blue dots and six pairs of red dots down their backs. They eat the leaves of Oaks.