Amid autumn's colorful façade, a fungal menace thrives, peaking in September and prompting premature defoliation. Spring's spores seek vulnerable hosts, exploiting fresh pruning wounds, and flourish in humid conditions. From apple scab ravaging crabapples to rust and powdery mildew besieging various species, proactive measures are crucial. Fungicides, judicious plant choices, and strategic pruning stave off these insidious party crashers, safeguarding your garden's health.