Plant Disease Identification and Control

Information on plant disease identification and control, including rot, freeze damage, rust, blight, mold, scales, bacteria, viruses, fungus, wilt, mildew, gall, mites, moths and cankers. Tips on integrated pest management and herbicide summaries.

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Phytophthora on African violet
Phytophthora Root Rot On Woody Ornamentals - Articles Articles
Fungus-like organisms belonging to the genus Phytophthora are soil- or plant-borne and all are plant pathogens. More
Gerald Holmes, California Polytechnic State University at San Luis Obispo, Bugwood.org
Powdery Mildew Cross Listing - Articles Articles

Powdery Mildew Cross Listing

Gary W. Moorman, Ph.D.

A few of the common powdery mildews and the plants that each can infect are listed here. More
Schefflera (Brassaia) Diseases
Schefflera (Brassaia) Diseases - Articles Articles
Informational table showing disease name, symptoms, pathogen/cause, and management of Schefflera (Brassaia) diseases. More
Powdery mildew on Poinsettia
Powdery Mildew - Articles Articles

Powdery Mildew

Gary W. Moorman, Ph.D.

Powdery mildew occurs on many different flowers, woody ornamentals and trees. More
Pothos Diseases
Pothos Diseases - Articles Articles
Informational table showing disease name, symptoms, pathogen/cause, and management of Pothos diseases. More
Poinsettia Diseases
Poinsettia Diseases - Articles Articles
Informational table showing disease name, symptoms, pathogen/cause, and management of Poinsettia diseases. More
Philodendron Diseases
Philodendron Diseases - Articles Articles

Philodendron Diseases

Gary W. Moorman, Ph.D.

Informational table showing disease name, symptoms, pathogen/cause, and management of Philodendron diseases. More
Pansy Diseases
Pansy Diseases - Articles Articles

Pansy Diseases

Gary W. Moorman, Ph.D.

Informational table showing disease name, symptoms, pathogen/cause, and management of Pansy diseases. More
Palm Diseases
Palm Diseases - Articles Articles

Palm Diseases

Gary W. Moorman, Ph.D.

Informational table showing disease name, symptoms, pathogen/cause, and management of Palm diseases. More
Pachysandra Diseases
Pachysandra Diseases - Articles Articles

Pachysandra Diseases

Gary W. Moorman, Ph.D.

Informational table showing disease name, symptoms, pathogen/cause, and management of Pachysandra diseases. More
Impatiens, Downy Mildew - sporulation closeup, photo: Gary Moorman
Overview of Plant Diagnostics - Articles Articles
Getting to the bottom of a plant problem can be a challenge. More
Maranta Diseases
Maranta Diseases - Articles Articles

Maranta Diseases

Gary W. Moorman, Ph.D.

Informational table showing disease name, symptoms, pathogen/cause, and management of Maranta diseases. More
Key Plants And Key Diseases Indoors
Key Plants And Key Diseases Indoors - Articles Articles

Key Plants And Key Diseases Indoors

Gary W. Moorman, Ph.D.

Selecting plants for placement in the interiorscape can be simplified if the key plants used are known and if the key pathogens on those plants can be identified. More
Kalenchoe Diseases
Kalenchoe Diseases - Articles Articles

Kalenchoe Diseases

Gary W. Moorman, Ph.D.

Informational table showing disease name, symptoms, pathogen/cause, and management of Kalenchoe diseases. More
Phytotoxicity caused by multiple applications of chlorothalonil fungicide.
Fungicide Resistance - Articles Articles

Fungicide Resistance

Gary W. Moorman, Ph.D.

A fungicide disrupts either energy producing reactions or a chemical building (synthesis) reaction within the target fungus. More
Gerbera Diseases
Gerbera Diseases - Articles Articles

Gerbera Diseases

Gary W. Moorman, Ph.D.

Informational table showing disease name, symptoms, pathogen/cause, and management of Gerbera diseases. More
Geranium Diseases
Geranium Diseases - Articles Articles

Geranium Diseases

Gary W. Moorman, Ph.D.

Informational table showing disease name, symptoms, pathogen/cause, and management of Geranium diseases. More
Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org
Fungal Root Rots And Chemical Fungicide Use - Articles Articles
Root rots of floricultural and woody ornamental crops are one of the most important causes of crop loss. More
Fuchsia Diseases
Fuchsia Diseases - Articles Articles

Fuchsia Diseases

Gary W. Moorman, Ph.D.

Informational table showing disease name, symptoms, pathogen/cause, and management of Fuchsia diseases. More
Ficus Diseases
Ficus Diseases - Articles Articles

Ficus Diseases

Gary W. Moorman, Ph.D.

Informational table showing disease name, symptoms, pathogen/cause, and management of Ficus diseases. More
Gerald Holmes, California Polytechnic State University at San Luis Obispo, Bugwood.org
Downy Mildew - Articles Articles

Downy Mildew

Gary W. Moorman, Ph.D.

Downy mildew is the common name for a group of highly specialized obligate parasites of vascular plants. More
Fern Diseases
Fern Diseases - Articles Articles

Fern Diseases

Gary W. Moorman, Ph.D.

Informational table showing disease name, symptoms, pathogen/cause, and management of Fern diseases. More
Exacum Diseases
Exacum Diseases - Articles Articles

Exacum Diseases

Gary W. Moorman, Ph.D.

Informational table showing disease name, symptoms, pathogen/cause, and management of Exacum diseases. More
Edema Of Geranium
Edema Of Geranium - Articles Articles

Edema Of Geranium

Gary W. Moorman, Ph.D.

Edema is a disease that affects geraniums, causing leaves to yellow and die. More
Easter Lily Diseases
Easter Lily Diseases - Articles Articles

Easter Lily Diseases

Gary W. Moorman, Ph.D.

Informational table showing disease name, symptoms, pathogen/cause, and management of Easter Lily diseases. More
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