Common Tree Problems

Peachtree Borer

Peachtree borer prefers trees that are stressed due to drought. Therefore, controlling it involves both supporting tree health with good cultural practices like watering and mulching, as well as providing insect control with bark-sprayed insecticides. More…

Pine Needle Scale

Pine needle scale is a small armored scale that feeds on the sugars contained in the needles of pines, spruce and fir. The insect attaches itself to the needle and produces a hard waxy shell to protect itself from predators and environmental conditions. More…

Pine Wilt

Pine wilt is a fatal disease of pine caused by the pine wilt nematode. Nematodes are microscopic, worm-like organisms that grow inside the tree’s water conducting tissue causing rapid death. More…

Rhizosphera Needlecast

Rhizosphaera needlecast (Rhizosphaera kalkhoffii) is a fungal disease of spruce trees that affects trees growing outside of their native range. Rhizosphaera starts on the inner and lower growth and progresses upward through the tree. More…

Royal Palm Bug

Royal Palm Bug, Xylastodoris luteolus, is a destructive insect pest of Cuban royal palms in the southern third of Florida.  This insect feeds on freshly opened leaves, giving infested trees a yellow, tattered appearance. More…

Spruce Spider Mite

Spruce spider mites (Oligonychus ununguis) are among the most devastating pests of common varieties of spruce trees and other conifers. This pest is most active in the cool spring and fall when it feeds on the needles of conifers, causing a bronze or rust coloration to the needles and potential leaf drop. More…

Sudden Oak Death

Sudden oak death, Phytophthora ramorum, is the common name for a disease that has killed hundreds of thousands of trees in California and Oregon.  Phytophthora ramorum attacks a wide variety of species besides oaks, including Douglas firs and coastal redwoods.  More…

Sycamore Anthracnose

Sycamore anthracnose is a fungal disease (Gnomonia leptostyla) that affects Sycamores throughout the United States. The fungus attacks the buds and twigs, so infected trees often have “witches brooms”

More…

Sycamore Lace Bug

Sycamore lace bug is an insect that feeds on the undersides of the leaves of sycamore and a few other trees, causing white stippling, chlorotic or bronzed leaves, and early leaf drop. More…

Tubakia Leaf Spot

Tubakia is a fungal disease that overwinters both on leaves remaining on the tree and those that have fallen to the ground. More…

Two Lined Chestnut Borer

Two lined chestnut borer is an insect pest that attacks oaks, beech, hornbeam and chestnuts that are stressed by drought, compaction or other insects or diseases. More…

Two-Spotted Spider Mite

Two-spotted spider mite, Tetranychus urticae, is a warm season mite, active during the hot summer months.  Two-spotted spider mites feed on the underside of plant foliage, causing chlorotic stippling on the leaf surface, which can lead to early leaf loss and stunted growth. More…

Urban Tree Stress

Although trees in the urban environment can be attacked from above with over pruning or physical damage, the most concerning issues occur below the soil to the trees’ roots. More…

Verticillium Wilt

erticillium wilt (also maple wilt) is a vascular disease caused by two species of fungi. Maple trees are by far the most susceptible, which is why this fungus is often called maple wilt. More…

White Peach Scale and White Prunicola Scale

White peach scale and white prunicola scale can significantly reduce fruit production and kill trees in as little as two years.  Although these hard scales are found primarily in the southeastern United States, both have been found as far west as Texas, and as far north as Maine. More…

Back to Top