At P.C. Hoag & Co., we understand that plant health goes far beyond pests. Fungal infections, bacterial blights, root rot, and environmental stress can all take a serious toll on your trees, shrubs, and landscape plants. Our ISA-certified arborists take a research-based, diagnostic-first approach to identifying and managing plant diseases throughout New Hampshire and Western Maine.
Just like people, plants require the right balance of nutrients, light, air, and water to stay resilient. When trees and shrubs become stressed—due to drought, poor planting conditions, overcrowding, or other environmental factors—they become more susceptible to disease. Common culprits in our region include:
Our team evaluates all three key factors in disease development: host susceptibility, presence of a pathogen, and favorable environmental conditions. If one is missing, the disease cannot progress.
Our tree and plant health care services are tailored to support long-term vitality through proactive and reactive strategies. If a disease is already present, we identify the type and severity, then apply appropriate treatments using products and techniques aligned with ISA guidelines.
In some cases, pruning infected branches (see pruning services) or adjusting soil conditions may be all that’s needed. Other times, a combination of soil remediation, targeted sprays, or systemic treatments may be required.
Early detection is critical. If you notice something unusual, schedule a consultation with one of our consulting arborists for a professional diagnosis.
The best disease management begins with prevention. Our team may recommend changes to:
If you’re concerned about disease in your trees, shrubs, or landscape plantings, contact us today. Our team will perform a detailed on-site evaluation and recommend a treatment plan that promotes resilience and long-term plant health.
Call 603-323-7217 or reach out online to schedule your consultation.
Q: What are common signs that my tree or shrub has a disease?
A: Symptoms may include leaf discoloration, early leaf drop, cankers, wilting, slow growth, dieback, or unusual spotting. If you notice any of these, a professional diagnosis is recommended.
Q: What types of plant diseases do you treat?
A: We manage a variety of fungal, bacterial, and viral diseases common to New Hampshire and western Maine, including apple scab, fire blight, anthracnose, needle cast, and root rot.
Q: How do you diagnose plant diseases?
A: Our ISA Certified Arborists inspect affected plants on-site, evaluate symptoms, assess environmental conditions, and may recommend lab testing for precise identification.
Q: Are your treatments safe for the environment?
A: Yes. We prioritize low-impact, science-based treatments and integrate cultural practices and organic options whenever possible to support a balanced landscape.
Q: Can plant diseases be prevented?
A: In many cases, yes. Preventive measures like proper pruning, soil health management, and early intervention significantly reduce the risk of disease outbreaks.
