Cranberry fruit rot (CFR) has constrained commercial cranberry production since the mid-1800s and remains among the most economically significant diseases affecting the crop. Historically viewed as a disease caused by a limited number of fungal pathogens, CFR is now recognized as a complex, multiscale pathosystem involving diverse fungal taxa, latent infections, host developmental stage, and environmentally driven disease expression. Approximately 12–15 fungal species have been associated with t