Prunus > Blossom/Fruit > Part or all of flower is brown
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- Sudden browning of blossoms or wilting of leaves
- Part or all of the ripening fruit develop a soft brown rot, then become shriveled and dusted with powdery tufts of tan to gray spores
- Rotten fruit may remain attached to the tree or fall to the ground
- Sunken, darkened areas on twigs from which gums are exuded, also known as gummosis
- More information on Brown rot...
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Bacterial spot and canker
Pseudomonas syringae pv. syringae
- Blossoms turn brown, especially after frost damage
- Angular, brown to black leaf spots that eventually drop out leaving holes and giving a ragged appearance on leaves
- Sunken dark colored elliptical cankers form on branches
- Sticky gums (gummosis) or sour-smelling liquid are excreted from infected branches
- More information on Bacterial spot and canker...