Garden & Orchard Diseases

A brief Internet search or a scan through your favorite gardening reference will tell you that plant diseases abound. Any time plants are stressed by suboptimal conditions, they may be unable to fight off the many pathogens that surround them, such as viruses, bacteria, and fungi.

Our guide to garden and orchard diseases contains information on the causes and symptoms of some of these problems. It also offers tips on treating and preventing diseases. Natural solutions are provided whenever possible.

Bacterial Diseases

Bacterial Leaf Spot

Bacterial Leaf Spot

Bacterial Wilt

Bacterial Wilt

Fire Blight

Fire Blight

Pierce's Disease

Pierce’s Disease

Fungal Diseases

Anthracnose

Anthracnose

Black Rot

Black Rot

Brown Rot

Brown Rot

Cedar-Apple Rust

Cedar-Apple Rust

Damping-Off

Damping-Off

Downy Mildew

Downy Mildew

Fusarium Wilt

Fusarium Wilt

Peach Leaf Curl

Peach Leaf Curl

Phytophthora Blight

Phytophthora Blight

Powdery Mildew

Powdery Mildew

Verticillium Wilt

Verticillium Wilt

Viral Diseases

Cucumber Mosaic Virus

Cucumber Mosaic Virus

Tobacco Mosaic Virus

Tobacco Mosaic Virus

Deficiency Diseases

Blossom End Rot

Blossom End Rot

Toxicity Diseases

Walnut Toxicity

Walnut Toxicity

Structural Problems

Growth Cracks

Growth Cracks

Helpful Resource

Disease Factsheets and Articles
Covers many diseases of vegetables, from arugula to tomatoes.