Tree Pest & Disease Service
Tree Pest and Disease Management Services
Welcome to Eugene M. Brennan Tree Service, your tree pest and disease experts in Union County, NJ. We understand that pests and diseases can be a significant threat to the health and beauty of your trees. That’s why we offer professional tree pest and disease control services to protect your property in Essex, Morris and Union County. We keep your trees healthy and strong.
We are licensed, insured, and certified New Jersey Board of Tree Experts license #499.
Tree Pest and Diseases Including
- Anthracnose
- Seiridium Cranker
- Emerald Ash Borer
- Needle Cast
- Armillaria Root Rot
- Black Knot Disease
- Dutch Elm Disease
- Hawthorn Rust & Cedar-Apple Rust
- Spotted Lanternfly
- Residential, commercial, campus and estates, tree pest and disease control.

Insect Control Services
Insects can cause significant damage to your trees if left unchecked. Our team of expert arborists can identify and control a wide range of insect pests, including aphids, borers, and scale insects, to keep your trees healthy and protected. We use the latest insecticides and other control methods to ensure that your trees are protected from these harmful pests.
Fungal Disease Control
Fungal diseases can cause discoloration, wilting, and death of your trees. Our team can identify and control a wide range of fungal diseases, including powdery mildew, rust, and anthracnose, to keep your trees healthy and protected. We use the latest fungicides and other control methods to ensure that your trees are protected from these harmful diseases.
Cultural Practices
Cultural practices such as proper pruning, fertilization, and irrigation can help prevent pests and diseases from affecting your trees. Our team of arborists can provide guidance and recommendations to ensure that your trees receive the care they need to stay healthy and strong.
Nutritional Support
Nutritional deficiencies can make your trees more susceptible to pests and diseases. Our team can provide soil testing and analysis to determine any nutrient deficiencies and provide the necessary fertilization to support your trees’ growth and health.

Herbicide Application
Herbicides can be used to control invasive weeds and plants that can compete with your trees for resources. Our team can safely and effectively apply herbicides to keep your trees healthy and protected.
Soil Management
Proper soil management is critical to the health and well-being of your trees. Our team can provide soil testing and analysis to determine any soil issues and provide recommendations for proper soil management to support your trees’ growth and health.
Insect Monitoring
Monitoring your trees for pests and diseases is an important aspect of protecting your property. Our team can provide regular monitoring to detect any issues early and take action to prevent them from becoming a problem.

Plant Pathology
Our team can provide plant pathology services, including disease diagnosis and treatment recommendations, to keep your trees healthy and protected.
Biological Control
Biological control methods, such as the use of predators and parasites, can be an effective way to control pests and diseases. Our team can provide recommendations and guidance on using biological control methods to protect your trees.
Common Trees We Tree For Insects and Disease
Although there are many species of trees we treat in New Jersey, the most common species are:
- American Beech (Fagus grandifolia)
- American Elm (Ulmus americana)
- Eastern White Pine (Pinus strobus)
- Douglas Fir (Pseudotsuga menziesii)
- Eastern Red Cedar (Juniperus virginiana)
- Green Ash (Fraxinus pennsylvanica)
- Hackberry (Celtis occidentalis)
- Hawthorn (Crataegus spp.)
- Honeylocust (Gleditsia triacanthos)
- Northern Red Oak (Quercus rubra)
- Paper Birch (Betula papyrifera)
- Pecan (Carya illinoinensis)
- Red Maple (Acer rubrum)
- River Birch (Betula nigra)
- Sassafras (Sassafras albidum)
- Sugar Maple (Acer saccharum)
- Sycamore (Platanus occidentalis)
- Tuliptree (Liriodendron tulipifera)
- White Oak (Quercus alba)
- Yellow Poplar (Liriodendron tulipifera)
FREE Tree Pest and Disease Services Quote
At Eugene M. Brennan Tree Service, we understand the importance of protecting your trees from pests and diseases. Our team of expert arborists is dedicated to providing the best possible care for your trees to keep them healthy and beautiful for years to come.
Contact us today to schedule a consultation and let us take care of the rest.
We answer your calls and all your tree insect and disease questions.
Click the black button below today to get your free quote and find out how we can help you with your tree health needs.