Tree Pest & Disease Control

pesticide applicatorTree Pest & Disease Control

Is your tree suddenly declining? Is it turning yellow and not growing? It may be suffering from pests, disease or both.

Our pesticide applications save thousands of landscape trees every year. Whether it’s preventative maintenance or remedying a problem, our methods have proven themselves effective. Through state-of-the-art application techniques we target problem pests and minimize damage to the tree. If you see your tree in decline, please schedule an assessment. The sooner we can treat it, the sooner it can recover.



Often property owners wait too long before they consider tree pest & disease control. Through standard integrated pest management (IPM), arborists are able to keep pest levels at acceptable levels. Rarely is it the aim of a tree doctor to eradicate the pest, as that often invites other pests to attack the tree unopposed. With a regular tree pest & disease assessment, we can determine and treat the primary cause of your tree’s decline and keep pests and disease at manageable levels.


  • Spring mineral oil application prevents scales on fruit trees.
    Spring mineral oil application prevents scales on fruit trees.

    Pesticide Application
    Broadcast spraying ensures effective coverage and kills leaf-eating insect pests.

    Our high-power spray trucks cover trees up to 60 ft. tall.

    This method is conditions dependent; wind, heat and moisture all factor into the application’s effectiveness, therefore we usually spray during early spring and summer mornings. In spring we apply a mineral oil blend to fruit trees, which deters scale infestation. In summer we apply insecticides to prevent worms, beetles, borers, weevils and many other pests. Broadcast spraying is relatively fast, affordable and effective against many invasive tree insects.

  • systemic pesticideNewly developed chemical compounds now allow pesticide uptake through the bark of mature trees.

    This application technique has revolutionized the way we handle pest problems. Bark application is a highly effective, minimally invasive way to treat trees of any size.

  • pesticide
    ArborFos injections treating a crab apple infected with fire blight.

    Another modern innovation, micro-injectors use the tree’s vasculature for pesticide uptake.

    Small injectors placed low on the trunk effectively deliver systemic pesticide to every part of the tree. Full uptake happens during the growing season, and takes 12-24 hours depending on site conditions. While injectors are slightly invasive, they are quite effective at treating a variety of persistent tree diseases and pests. Injections may need to be made annually for several years to bring a tree out of decline.

  • beetle packets
    BeetleBlock packet installation is inexpensive and effective.

    tree service pesticide
    Big results in a small package – you’ll never even know it’s there.

    Douglasfir beetles have destroyed entire forests throughout the West.

    They prey on douglasfirs and can kill a tree in single season. An effective prevention method is hanging pheromone packets on target trees in the spring. Our hanging methods are fast, safe and prevent infestation. Our bubble packs are good for one season, and after five seasons we offer a complementary empty packet removal on your land.

    **We do not install pine beetle packets- pines are better protected by spraying the entire trunk with carbaryl. For a pine-beetle management plan please call us today!**

  • Minimally invasive, highly effective.

    Fertilizer and fungicide applied to the roots of a recovering walnut tree.
    Fertilizer and fungicide applied to the roots of a recovering walnut tree.

    We inject systemic pesticides and fungicides during fertilization in early spring and fall. Combined with our soluble fertilizer, it’s a one-two punch for your spruce, birch and firs. Systemic pesticides/fungicides treat the tree internally, from the roots to the leaves, ensuring any pests or fungus living under the bark are killed.