Viscid rot

Phomopsis vaccinii

This fungal pest is usually associated with warmer climates and is not considered a major pest in the Pacific Northwest. Phomopsis canker causes dieback of flowers, twigs and shoots. Cankers are seen on 1-, 2-, and 3-year old stems; they are seen as elongated, flattened cankers and become covered with small, pinpoint-sized fruiting bodies that produce spores. Infected stems will wilt during he summer and the leaves turn color earlier, causing a red flagging (similar to Godronia canker).

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