A Technical Report from The Bartlett Tree Research Laboratories 407
Brown rot is a destructive disease on many species in the genus Prunus. Fruiting and ornamental cherries, peaches, nectarines, plums, and apricots are most susceptible. The disease causes blighting of blossoms, shoots and twigs as well as decay of ripening fruit. Brown rot occurs anywhere susceptible species are grown but is most severe in humid climates with ample rainfall.