How to Spot Common Tree Diseases and Pests Aug 09, 2025

Tree care is an essential part of maintaining a healthy landscape. For homeowners and property managers, identifying tree diseases and pests early can prevent further damage and save costs on extensive treatments or tree removal. T&S Tree Care LLC is dedicated to providing you with the knowledge you need to keep your trees thriving. In this article, we'll guide you through the most common tree diseases and pests, helping you recognize them before they become a significant problem.

Spotting tree diseases early begins with understanding the signs. One of the most prevalent tree diseases is anthracnose, which affects many tree species including sycamores and oaks. If you notice irregular tan spots on leaves or early leaf drop in spring, anthracnose might be the culprit. Fortunately, proper pruning and maintaining healthy trees through adequate fertilization and watering can help manage this disease.

Another common issue is powdery mildew. This fungal disease manifests as a white powder on leaves, making them look as if they've been dusted with flour. Commonly affecting maples and oaks, powdery mildew thrives in warm, dry conditions. Control measures include ensuring good air circulation through strategic pruning and, if necessary, applying fungicidal treatments.

Canker diseases present another threat. These are caused by various fungi that enter the tree through wounds in the bark. Symptoms include sunken, discolored patches on the bark and eventual branch dieback. If you spot these symptoms, it’s crucial to prune affected areas with disinfected tools to prevent spreading and to consult professionals for serious infestations.

Pests, much like diseases, pose significant risks to tree health. One notorious pest is the emerald ash borer, a green beetle that targets ash trees. Trees infested with this pest exhibit d-shaped holes in the bark and thinning crowns. Early detection is key, and treatment options include professional insecticide applications and removing heavily infested trees to protect surrounding vegetation.

Spider mites are another common pest, often leaving delicate webbing and causing yellowing of the leaves. These pests tend to thrive in hot, dry conditions. Increasing humidity through regular watering and using insecticidal soaps can help control their population.

The gypsy moth is another destructive pest, notorious for defoliating trees entirely. They are recognizable by their hairy caterpillars with distinctive blue and red dots. Manual removal of egg masses and the use of biological pesticides can reduce their numbers.

Prevention remains the best approach to handling tree diseases and pests. Regular inspection of your trees for unusual symptoms and practicing good cultural techniques such as correct pruning, watering, and fertilization can minimize risks. Keeping trees healthy enhances their resilience against both diseases and pests.

At T&S Tree Care LLC, we understand that managing tree health can be overwhelming. Our team of experts is always ready to assist you with professional advice and services tailored to your specific tree care needs. Whether it's diagnosing diseases, controlling pests, or simply providing expert maintenance, we are here to ensure your trees stay healthy and beautiful year-round.

In conclusion, understanding how to spot common tree diseases and pests is crucial for maintaining a healthy landscape. By staying vigilant and employing preventive measures, you can protect your trees from potential threats. Trust the expertise of T&S Tree Care LLC to guide you in nurturing and preserving the natural beauty of your property. If you suspect any tree issues, don’t hesitate to reach out to us for assistance. Your trees deserve the best care possible.