Brown rot is a common and destructive disease of members of the prunus genus of trees. The brown rot fungus may attack blossoms, fruit, spurs (flower and fruit bearing twigs), and small branches. Symptoms first appear in the spring as the blossoms open. Diseased flowers wilt, turn brown, and may become covered with masses of brownish-gray spores. The diseased flowers usually remain attached into the summer. The disease is most important on fruits just before ripening, during and after harvest. Spray treatments recommended as a preventative measure