Category: Trees

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...

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...

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...

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,...

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...

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