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...
Category: Trees
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...
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,...
Armored Scale Insects & Control
Many armored scales are serious pests of ornamental shrubs, trees, groundcovers and turfgrasses in South Carolina. Almost 40% of the Clemson Plant and Pest Diagnostic Clinic sample submissions for...
Leyland Cypress Diseases, Insects & Related Pests
Leyland cypress (x Cupressocyparis leylandii) has grown in popularity in the Southeast over the last few decades, especially in its use as a fast-growing, screening plant. With the increased...
Crapemyrtle Bark Scale
The crapemyrtle bark scale (Acanthococcus lagerstroemiae) is a recently introduced pest from Asia that initially infested crapemyrtles (Lagerstroemia spp.) in Texas during 2004. Since then, it has...
Cranberry Rootworm Beetle
The Cranberry rootworm beetle (Rhabdopterus picipes) is one of several leaf-feeding beetles and weevils that consume foliage of woody landscape plants in South Carolina. These nocturnal-feeding...
Sycamore Diseases & Insect Pests
Of the 10 species of sycamore (Platanus species), one species, American sycamore (Platanus occidentalis) and one hybrid, London plane tree (Platanus x acerifolia) are common in South Carolina. Both...
Crape Myrtle Diseases & Insect Pests
Crape myrtles (Lagerstroemia indica) are essentially trouble-free small trees. The most common problems include powdery mildew, Cercospora leaf spot, aphids, Japanese beetles and sooty mold. More...
Dogwood Diseases & Insect Pests
The flowering dogwood (Cornus florida) is a small, deciduous ornamental tree that is native throughout the eastern United States. Although dogwoods are well adapted to South Carolina, they can be...
Persian Parrotia
Native to the lower mountain slopes of the northern Alborz mountains in northern Iran and Azerbaijan, Persian parrotia (Parrotia persica ) has been widely cultivated in Europe and the U.S. (USDA...
Maple Diseases & Insect Pests
Diseases Leaf Scorch: On maple (Acer species) trees a number of problems cause symptoms that are generally classified as leaf scorch. Scorch symptoms are light brown or tan dead areas between leaf...