Tree Fruit Diseases
An Introduction to Black Knot
Black knot is a fungal disease, caused by Apiosporina morbosa, that attacks stonefruit species in the genus Prunus. Black knot is known for irregular, thick, black swellings on limbs.
Black Rot Disease in Apples
Black rot disease, caused by the fungus Botryosphaeria obtusa, is concerning to homeowners with apple trees as part of their landscapes.
Brown Rot in Stone Fruit
Brown rot (Monillinia fruticola) is a major disease of stone fruits. All stone fruit can be susceptible to this disease, with sweet cherries being the most susceptible.
Cherry Leaf Spot
Cherry leaf spot is a fungal disease caused by Blumeriella jaapii (Rehm) Arx, formally known
as Coccomyces hiemali. It attacks the leaves, leaf stems, fruit and fruit stems.
Fire Blight on Pome Fruit
Fire blight damage can range from minimal to extremely severe depending on several factors.