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Symptoms
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Brown Rot is a fungus disease of cherry, plum, peach and other prunus species. Also, softwoods can be affected such as pine, spruce and fir. Fungi can survive each year on infected twigs, branches, old flower parts or mummified fruit. Wind and rain then blows spores to healthy blossoms in the spring to begin the infection process during wet weather. Infected flower parts turn light brown and may develop areas of buff colored or gray spores. Infected petals may look water soaked and may be mistaken for frost injury. Flowers generally collapse as the fungus invades through the pedicel. |
