Author: James H. Blake

Galls & Outgrowths

Galls are abnormal swellings or localized outgrowths (tumors) of plant tissue. They are extremely variable in size, shape and their location on the plant. Some are little more than a blister on the...

Pecan Diseases

Pecan trees (Carya illinoensis) are widely grown in South Carolina mainly for both their tasty edible nuts and shade. Pecan trees are susceptible to several diseases in our area due to the hot and...

Black Knot on Cherries & Plums

Hi, I’m James Blake, Director of the Clemson Extension Home & Garden Information Center. Today we’re looking at a disease known as black knot. We’re along the edge of the Clemson...

Powdery Mildew on Dogwood

Hi, I’m James Blake, Director of the Clemson Extension Home & Garden Information Center. Today we’re looking at powdery mildew on dogwood. We’re in the South Carolina Botanical...

Camellia Leaf Gall

Hi, I’m James Blake, Director of the Clemson Extension Home & Garden Information Center. Today we’re going to be looking at camellia leaf gall. We’re in the Camellia Garden of the...

Spot Anthracnose on Dogwood

Hi, I’m James Blake, Director of the Clemson Extension Home & Garden Information Center. Today we’re going to talk about a disease on dogwoods known as spot anthracnose. We’re...

Avian Influenza (Bird Flu)

Avian influenza (AI), commonly called “bird flu”, is a virus in the Influenza Type A group which includes avian, swine, equine, and human flu viruses. The avian influenza virus affects...

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