Trees are an important part of our environment, providing us with clean air and shade, and adding to the beauty of our surroundings. However, trees can fall prey to various diseases that can cause serious harm to them. Here are the top tree diseases to watch out for:

1. Dutch Elm Disease: This is a fungal disease that affects elm trees. It is spread by bark beetles and causes the tree to wilt and die. The disease can spread quickly, and infected trees should be removed to prevent the disease from spreading to healthy trees.
2. Oak Wilt: This is a fungal disease that affects oak trees. It is spread through root grafts and insect vectors. The disease causes the tree to wilt and die, and infected trees should be removed to prevent the disease from spreading to healthy trees.
3. Apple Scab: This is a fungal disease that affects apple trees. It causes the leaves to turn yellow and fall off, and can also affect the fruit. The disease can be controlled through the use of fungicides and proper pruning techniques.
4. Cedar Apple Rust: This is a fungal disease that affects both cedar and apple trees. It causes the leaves to turn yellow and develop brown spots, and can also affect the fruit. The disease can be controlled through the use of fungicides and proper pruning techniques.
5. Sudden Oak Death: This is a fungal disease that affects oak trees. It is spread through water and can cause the tree to wilt and die. The disease can be controlled through the use of fungicides and proper pruning techniques.
6. Anthracnose: This is a fungal disease that affects a wide variety of trees, including dogwood, oak, maple, and sycamore. It causes the leaves to develop brown spots and can cause the tree to die. The disease can be controlled through the use of fungicides and proper pruning techniques.

It is important to keep an eye on your trees and watch for any signs of disease. Early detection is key in preventing the spread of the disease to healthy trees. If you suspect that your tree may be infected, contact a professional arborist to assess the situation and provide treatment options. Regular tree maintenance, including pruning and fertilization, can also help to prevent the spread of disease and keep your trees healthy.

References: Lawn&Landscape, FamilyHandyman