The purpose of this guide is to assist stone fruit growers to identify Plum Pox Virus (PPV) and differentiate it from other disease symptoms. This guide contains photographs of PPV on peach, plum and apricot fruit, flowers, and leaves. (The strain-D PPV currently found in North America does not infect cherries.)

Several other diseases of stone fruit resemble PPV. The guide also includes photographs of diseases such as scab, leaf curl, and rust, as well as symptoms of nutritional disorders, herbicide damage, and insect/mechanical damage. The guide is cross-referenced so you can compare similar-looking symptoms.

Because of the impact of this virus on the stone fruit industry, it is important that growers continue to scout their orchards for symptoms. An observant grower first found Plum Pox virus in Pennsylvania.
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