Why Are My Trees Dying?
Clemson Extension Horticulture Agents get numerous questions this time of year about trees dying. There can be several factors that stress trees. In late summer, the most likely problem is related...
Category: Trees
Fall Webworm
During summer and fall, large silken webs begin to appear and envelope tree branches. These webs, which contain larvae (also called caterpillars) and leaves, are created by a native defoliator...
Chastetree
Chastetree (Vitex agnus-castus) is a deciduous (loses its leaves in the fall), multi-trunked shrub or small tree native to southern Europe and western Asia. It is an excellent selection for southern...
Palm Diseases & Nutritional Problems
Palm trees grown in the landscape appear carefree, but they are susceptible to many diseases, insects, and nutritional problems. Avoid many of these problems by following the recommended cultural...
Algal Leaf Spot
Of the various kinds of organisms that cause plant disease, plant parasitic algae are not the norm. The only species that is common in the United States is Cephaleuros virescens. It causes a disease...
Emerald Ash Borer
The emerald ash borer (Agrilus planipennis, EAB) is a non-native forest pest known for its bright green color, devastating impacts on the environment, and massive economic cost.It was first...
Pine Diseases
Pine trees (Pinus species) are important to South Carolina not only for their ornamental value but also for lumber, watershed management, wildlife habitat, and Christmas trees. There are over 125...
Juniper Diseases & Insect Pests
Junipers grown in South Carolina are relatively low-maintenance plants if planted in the correct location and given proper cultural care. There are several common problems that can cause browning of...
Holly Diseases & Insect Pests
Diseases Black Root Rot: Black root rot is caused by the fungus Thielaviopsis basicola. This fungus primarily affects the root system and reduces plant vigor. Aboveground symptoms may include...
A Beautiful Dogwood with Edible Fruit
The Cornelian cherry dogwood, Cornus mas, is a little-known dogwood of note. Instead of the showy, white bracts of our native and Kousa dogwoods, this tree has clusters of small yellow flowers which...
Camellia Diseases & Insect Pests
Camellias are one of the most desirable and well-adapted plants for Southern gardens. Many of the common problems of sasanqua camellia (Camellia sasanqua, C. hiemalis, and C. vernalis) and the...
Powdery Mildew
Introduction Powdery mildew is the name given to a group of diseases caused by several closely related fungi. Their common symptom is a grayish-white, powdery mat visible on the surface of leaves,...