Category: Non-Pest Problems

Tree University logo in Red

Hypoxlon Canker

Description: The following is a description of hypoxylon canker in oak, taken from the Texas Plant Disease Handbook: “Hypoxylon Canker (fungus – Hypoxylon atropunctatum and other Hypoxylon

Read More »
Tree University logo in Red

Leaf Infection

Description: Leaf spots, or infections of leaves, are caused by a variety of fungi and some bacteria. Leafspots are seen more frequently in late summer as

Read More »
Tree University logo in Red

Powdery Mildew

Description: Many fungi fall under the category of powdery mildew. Some plants can withstand being infected and not have serious injury. Begonias can die from a

Read More »
Tree University logo in Red

Root Rot

Description: There are many different types of root rot affecting both urban and forest trees. High soil moisture content and high temperatures are common factors. They

Read More »
Tree University logo in Red

Seridium Canker

Description: Seridium canker is caused by a fungus and is the most damaging disease of Leyland cypress. The fungus will destroy the cypress’ form and eventually

Read More »
Tree University logo in Red

Verticillium Wilt

Description: Verticillium Wilt is a serious vascular disease of hundreds of woody and herbaceous plant hosts. One group not affected by verticillium wilt is the gymnosperms,

Read More »
Tree University logo in Red

Bacterial Leaf Scorch

Descript ion: Bacterial leaf scorch (BLS) is a chronic, eventually fatal disease that is most noticeable in theearly fall. Urban trees such as sycamore, red maple,

Read More »
Tree University logo in Red

Apple Scab

Description: Apple scab is a serious disease in virtually all apple-producing regions worldwide. If not controlled it can cause extensive losses where humid, cool weather occurs

Read More »
Tree University logo in Red

Anthracnose

Description: Anthracnose is a disease that has decimated much of the native Dogwood populations in the forests of the United States. Dogwood anthracnose affects all above

Read More »