Insect & Disease Control

Proactive Tree Health Care

The first line of defense to protect your trees and landscape against insects and disease is to maintain your plant’s health. The primary focus of our Preventative Pest Management Program is overall tree care.

The Tree Medic’s Certified Arborists will assess the infestation or disease impact and the tree’s overall condition, then recommend the most effective and environmentally sensitive approach to treat the symptoms.

State-of-the-art natural pest controls and dormant oils are among the tools we use to help restore a tree to good health.


Other insects feed inside the tree or on the tree’s root system, making them very difficult to detect. The Tree Medic knows which tree species are affected by which insects, where to look for problems, and when to best address them.

There are hundreds of different species of insects in the Northwest that can cause damage from feeding on your trees and landscape plants. Some insects are fairly obvious to detect, such as wood-boring insects tunneling through your tree’s trunk and leaving telltale sawdust in their wake, or leaf-feeding insects such as aphids leaving a wet, sticky mess on tree leaves, the patio, or your car.

State-of-the-art techniques and products are just part of our integrated system for managing pest populations that may be out of control, and causing irreparable harm to your woody landscape.

Not all insects are bad. Trees are home to hundreds of species of beneficial insects and pollinators, which play a vital role in your backyard ecosystem.

The Tree Medic always considers the beneficial insects in your landscape before prescribing a management plan to bring damaging insect populations in check.

Several common pest insects include:

  • Turpentine beetle
  • Aphids
  • Sawflies
  • Bark beetle
  • Bronze birch borer
  • Psyllids
  • Whiteflies
  • Spider Mites
  • Scale Insects
  • Thrips
  • Weevils
  • Adelgids


Diseases are any abnormalities with the growth or health of a tree or shrub. They can be caused by fungi, bacteria, insects, viruses, and even environmental stresses, such as weather extremes, drought, or pollution.

Diseases can be difficult to diagnosis because many of the causes will produce similar-looking symptoms. Accurate and timely diagnosis is essential to developing an effective treatment program for your plants.

A visit from The Tree Medic is the simplest way to properly identify a problem, and find the most appropriate solution.

Several common disease-causing agents in the Northwest include:

  • Phytophthora root rot
  • Armillaria root rot
  • Fireblight
  • Anthracnose
  • Leafspot diseases
  • Verticillium wilt
  • Cankers
  • Wood decay
  • Powdery Mildew
  • Needlecasts
  • Blights
  • Drought
  • Overwatering and poor soil drainage
Sawfly Larvae | Specialty Tree Services Inc


The Specialty Tree Services arborists are certified by the International Society of Arboriculture.
Call or Text:
(208) 659-8400
Powdery Mildew on Norway Maple | Specialty Tree Services Inc
canker sap insect bore hole