Insect & Disease Resource Center
Search Results
-
Cedar Rust
There are multiple rust fungi that affect cedars (junipers): cedar-quince rust, cedar-hawthorn rust and cedar-apple rust. All of these rusts require two different hosts and alternate between them during the year. Cedar-quince rust appears as elongated branch swellings that produce orange spores.
-
Dogwood Anthracnose
Dogwoods are treasured landscape trees. A destructive disease known as anthracnose can tarnish their beauty, degrade their health, or even kill the tree.
-
Euonymus Scale
-
Iron Chlorosis
Iron chlorosis is a yellowing of plant leaves often caused by iron deficiency that affects many desirable landscape plants in North America. The primary symptom of iron deficiency is interveinal chlorosis, the development of a yellow leaf with a network of dark green veins.
-
Lace Bugs
Lace bugs are sap-sucking pests that feed on deciduous and evergreen plants during the spring and summer, weakening their host plants. These pests thrive in full sun under dry conditions. Depending on the species, they are about 1/8-inch long and whitish with tan markings. Their most distinctive physical trait is, of course, lace-like front wings.
-
Mites
Mites are nearly invisible, but they can cause destruction that will surely be noticed on a variety of indoor and outdoor trees, shrubs and plants. Signs that mites are present include spotting, bronzing or yellowing of leaves and the presence of small webs between twigs.
-
Photinia Leaf Spot
Photinia leaf spot is a fungus that discolors and destroys plant leaves in the cool, wet elements of spring and fall.