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...
Category: Trees
Japanese Cryptomeria
Japanese cryptomeria (Cryptomeria japonica), or Japanese cedar, is a splendid evergreen that becomes even more handsome as it matures. Native to Japan and southern China, cryptomerias are excellent...
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...
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...
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...
Crapemyrtle Bark Scale
The crapemyrtle bark scale (Acanthococcus lagerstroemiae) is an introduced pest from Asia that initially infested crapemyrtles (Lagerstroemia spp.) in Texas in 2004. It then spread rapidly through...
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,...
Integrated Pest Management (I.P.M.) for Evergreen Bagworms
Evergreen bagworm, Thyridopteryx ephemeraeformis, is a detrimental insect pest to landscape plants that often escapes detection until there is significant plant damage. Bagworms feed on many plant...
Black Twig Borer
Black Twig Borer (Xylosandrus compactus) is a species of a scolytid beetle and is one of the few ambrosia beetles that will infest healthy or stressed plants. The adult beetle is solid black, shiny,...
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...
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...
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...