Extension > Garden > Diagnose a problem > What's wrong with my plant? > Deciduous Trees > Prunus > Part or all of flower is brown
Prunus > Blossom/Fruit > Part or all of flower is brown
1 of 2
Brown rot
Monilinia fructicola
- 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
2 of 2
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
