How to Identify, Prevent, and Treat Apple Scab
Distorting leaves and damaging fruit, apple scab (caused by the fungus Venturia inacqualis) is one of the most common and destructive orchard diseases. Apple scab… Read More
Category Archives: Tree Diseases
Black Rot of Apples and Other Pome Fruits
Black rot is a disease caused by the fungus, Botryosphaeria obtusa, which can attack the fruit, leaves, and bark of any tree in the pomaceous… Read More
Powdery Mildew
Powdery mildew is a very common fungal disease on several types of plants. Different species of the mildew have different host plants. Apples and pears are… Read More
Cedar Apple Rust
Cedar Apple Rust (CAR) is a fungal disease that attacks apples. It mainly occurs in North America in areas east of the Rocky Mountains. This fungus… Read More
Brown Rot on Stone Fruits
What is brown rot? Brown rot is a common fungal disease (Monilinia fructicola) that affects trees in the “stone fruit” category such as peaches, nectarines,… Read More
Preventing and Treating Fire Blight
Fire blight is a bacterial disease mostly affecting apples, pears, Asian pears, and close relatives like quinces and hawthorns. It gets its name because it… Read More
Peach Leaf Curl
Check your peach trees! We’re getting a lot of reports and questions again this spring about peach leaf curl on trees around the city. This… Read More