A Guide to Common Tree Diseases in Syracuse and How to Treat Them

by | Apr 6, 2023 | Tree Services


Trees in Syracuse, NY, and the surrounding areas face a variety of diseases that can impact their health and longevity. In this guide, we’ll cover some common tree diseases found in the region and how to treat them. Proper tree care is essential to prevent and manage these diseases, and Tree Service Syracuse is here to help you maintain the health of your trees.

Common Tree Diseases in Syracuse

1. Anthracnose

Anthracnose is a fungal disease that affects various tree species, including sycamore, oak, and maple. Symptoms include discolored, wilted, or distorted leaves and cankers on twigs and branches. This disease typically occurs during wet and cool spring weather.

Treatment: Prune and dispose of infected branches, maintain tree health through proper watering and fertilization, and consider applying a fungicide in the early spring.

2. Dutch Elm Disease

Dutch Elm Disease is a fatal fungal disease affecting elm trees. The fungus is spread by the elm bark beetle, which carries fungal spores from tree to tree. Symptoms include wilting, yellowing, or browning of leaves and branch dieback.

Treatment: Prune and destroy affected branches, and inject trees with a fungicide. Removing dead or dying elm trees can help prevent the spread of the disease.

3. Apple Scab

Apple Scab is a common fungal disease affecting apple and crabapple trees in Syracuse. The disease causes dark, olive, and fruit, which can eventually lead to defoliation and reduced fruit production.

Treatment: Rake and dispose of fallen leaves to reduce the fungus spread, prune and maintain tree health, and apply a fungicide during the growing season.

4. Oak Wilt

Oak Wilt is a lethal fungal disease affecting oak trees. The fungus is spread through root grafts between neighboring trees or by sap-feeding beetles. Symptoms include wilting, browning, and premature leaf drop, eventually leading to tree death.

Treatment: Promptly remove and dispose of infected trees, avoid pruning during the growing season, and apply a fungicide to protect nearby trees. In some cases, severing root connections between trees may help prevent the spread of the disease.

5. Powdery Mildew

Powdery Mildew is a common fungal disease affecting various tree species, including maple, dogwood, and crabapple. The disease appears as a white or gray powdery coating on leaves, which can lead to leaf distortion, discoloration, and defoliation.

Treatment: Prune to improve air circulation within the tree canopy, remove and dispose of infected leaves, and apply a fungicide as necessary.

Preventing Tree Diseases

Proper tree care and maintenance are essential in preventing the onset and spread of tree diseases. Some general prevention tips include:

  • Regularly inspect your trees for signs of disease, pests, or other issues.
  • Maintain tree health through proper watering, fertilization, and tree pruning.
  • Clean pruning tools between uses to prevent the spread of disease.
  • Plant disease-resistant tree varieties when possible.
  • Remove dead or dying trees to prevent the spread of disease and pests.

How Tree Service Syracuse Can Help

Tree Service Syracuse is a professional tree care company serving Syracuse and the surrounding areas, including Cicero, DeWitt, Onondaga, Lysander, Clay, Salina, and Manlius. Their team of experts can help diagnose and treat various tree diseases and provide guidance on proper tree care and maintenance to prevent future issues. Services include:

  • Tree Disease Diagnosis and Treatment: Tree Service Syracuse can accurately diagnose tree diseases and recommend the appropriate treatment, including fungicide applications and pruning.
  • Tree Pruning and Trimming: Regular tree trimming helps maintain tree health, improving their resistance to diseases and pests.
  • Tree Removal and Emergency Tree Removal: When tree removal is necessary, Tree Service Syracuse can handle the job safely and efficiently, minimizing the impact on your property and the environment when tree removal is necessary.


Tree diseases can pose a serious threat to the health and longevity of your trees, but with proper care and maintenance, many of these issues can be prevented or managed. By partnering with a professional tree care company like Tree Service Syracuse, you can ensure the health and well-being of your trees, preserving the beauty and environmental benefits they provide to your property and the Syracuse area.

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