Diagnosis of plant problems can be a difficult and at times impossible task. The goal is a correct diagnosis so that management procedures can be implemented successfully. This guide is designed to provide a description of disease symptoms for disease identification as well as some brief information on disease management. References listed will provide more detailed diagnostic and management information.

Proper plant placement and management in the landscape are very important in establishing and maintaining plant health. In some situations pesticides may be a necessary component of disease management; in other cases they may not be or they are not available. Pesticides are used as an aid to restore plant health, but are seldom a long-term solution for plants on poor sites or with severe mechanical damage.

While pesticide recommendations in this guide are current at the time of publication, the availability and recommended use of specific pesticides may change. The label on the pesticide being used is the final authority on how it is to be legally used. Pesticides on the following pages are listed by the common names of their active ingredients. These names are found on the label under the heading Active Ingredients, often listed in fine print.

Representative trade names may be included along with generic names. This information is supplied with the understanding that no discrimination is intended and no endorsement is implied.

Table of Common and Trade Names