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Root rots of floricultural and woody ornamental crops are one of the most important causes of crop loss.

When assessing the various procedures and equipment used in a greenhouse, keep in mind the threat of pathogen, mite, and insect population development.

Where do diseases begin? Learn to minimize losses caused by plant pathogens by reducing or eliminating the numbers of pathogens at their source.

Bacteria are microscopic, single-celled organisms that have a cell wall.

The bacterium Pseudomonas syringae, is an opportunistic pathogen which attacks a wide variety of woody plants especially when they are damaged by frost or injury.

Informational table showing disease name, symptoms, pathogen/cause, and management of Fuchsia diseases.

Informational table showing disease name, symptoms, pathogen/cause, and management of Pine diseases.

Plant diseases cannot be allowed to reduce the quantity of plants for sale or to reduce plant quality by stunting plants or spotting the flowers and foliage.

While most nematodes are soil-dwelling, the foliar nematode Aphelenchoides lives only briefly in soil.

Informational table showing disease name, symptoms, pathogen/cause, and management of Fern diseases.

Informational table showing disease name, symptoms, pathogen/cause, and management of Narcissus diseases.

Informational table showing disease name, symptoms, pathogen/cause, and management of Willow diseases.

Informational table showing disease name, symptoms, pathogen/cause, and management of Euonymus diseases.

Informational table showing disease name, symptoms, pathogen/cause, and management of Catalpa diseases.

Edema is a disease that affects geraniums, causing leaves to yellow and die.

Informational table showing disease name, symptoms, pathogen/cause, and management of Marigold diseases.

Informational table showing disease name, symptoms, pathogen/cause, and management of Iris diseases.

Informational table showing disease name, symptoms, pathogen/cause, and management of Maranta diseases.

Informational table showing disease name, symptoms, pathogen/cause, and management of Grape Ivy (Cissus) diseases.

Informational table showing disease name, symptoms, pathogen/cause, and management of Pachysandra diseases.

Informational table showing disease name, symptoms, pathogen/cause, and management of Poplar diseases.

Informational table showing disease name, symptoms, pathogen/cause, and management of Privet diseases.

The fungus Nectria invades wood damaged by freezing, hail, animals and insects.

Informational table showing disease name, symptoms, pathogen/cause, and management of Impatiens diseases.

Informational table showing disease name, symptoms, pathogen/cause, and management of Zinnia diseases.