Just like human beings can get sick, trees are also susceptible to contracting different diseases. Tree care methods, environmental conditions, and additional factors affect the health of plants. To take better care of the vegetation, here is a guide to common tree diseases to keep on your radar and how to prevent them. 

3 Tree Diseases to Know About

1. Canker Disease

There are numerous types of canker diseases that infect elm, maple, spruce, ash, willow, and other softwood and hardwood species. Fungi and bacteria enter damaged bark tissue or sapwood and attack the vascular system. An infected tree will no longer be able to circulate nutrients as a result. A canker, which is a blister (typically long and oval shaped) forms on the bark. 

To prevent canker diseases, avoid wounding the bark while tree trimming and pruning. Landscaping tools should also be sterilized to prevent pathogens from spreading. Tree care technicians can place guards and wraps on trunks to protect the bark from high winds and sunscald.

2. Powdery Mildew

Powdery mildew resembles a layer of chalky dust on leaves. The mildew prevents plants from completing photosynthesis. Eventually, the leaves turn yellow and die. Powdery mildew is caused by fungi that thrive in humid, shaded areas. To prevent this disease, a landscaping professional can thin out the tree canopies to improve air circulation. Take steps to avoid overwatering, as too much water increases humidity.

3. Fire Blight

Caused by the bacterium Erwinia amylovora, fire blight affects the health of fruit trees. The bacterium requires a damp, warm, humid environment to survive and spreads via pollinators, irrigation, and wounds. Cankers; oozing wounds; charred-looking, black leaves; and dead twigs and branches are common symptoms of fire blight. To prevent the disease from spreading, the entire infected branch must be removed.

For professional help maintaining the health of your trees, contact the crew at Sherwood's Tree Service in Honolulu, HI. Serving clients throughout Oahu since 1974, the landscaping contractors provide 24-hour tree services to tend to a wide variety of needs. Learn about available tree care solutions online, and call (808) 537-9705 for an estimate.