The arboreal fungus appears on the branches of trees in the genus Prunus. In Minnesota, that means cherry and plum trees.

Black knot, a fungal disease, is affecting cherry and plum trees in the Greater Columbus area, likely due to recent wet weather. The disease causes hard, black knots on branches, disrupting growth and ...

Trees and shrubs in the genus Prunus, which includes cherries and plums, are susceptible to a fungal disease commonly called ...

If you have cherry or plum trees, now's a good time to check for a disease called black knot fungus. The fungus can go unnoticed with summer foliage but is apparent when trees are winter-bare. Also ...

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