Insect & Pest Management

Insect and pest management starts with understanding what is actually happening to the tree. Chewed leaves, thinning canopy, sticky residue, boring dust, scale, aphids, mites, beetles, or branch dieback can all point to different issues, and not every insect requires intervention. Some pest activity is cosmetic or temporary, while other infestations can weaken trees, spread disease, or accelerate decline.

Common Applications or Benefits

  • Diagnose insect activity before recommending treatment

  • Manage select tree pests with targeted treatment options

  • Address aphids, scale, mites, borers, beetles, caterpillars, and other tree pests when appropriate

  • Evaluate sticky residue, leaf damage, canopy thinning, dieback, or visible pest activity

  • Support mature, high-value, stressed, or vulnerable trees

  • Reduce unnecessary pesticide applications through professional assessment

  • Provide licensed applicator support for regulated treatments

  • Combine pest management with pruning, soil care, mulching, irrigation guidance, or monitoring

  • Help determine whether decline is caused by pests, disease, drought, soil stress, or site conditions

  • Support homeowners, estates, HOAs, commercial properties, and property managers with clear tree health recommendations

Common Tree Pests in the PNW

• Emerald Ash Borer (EAB)

• Bronze Birch Borer

• Flatheaded Borers

• Aphids

• Scale Insects

• Spider Mites

• Root Weevils

• Bark Beetles

• Tent Caterpillars

• Fall Webworms

• Douglas-Fir Tussock Moth

• Pine Bark Adelgid

• Woolly Aphids

• Leafminers

• Sawflies

• Various Defoliating Insects

Custom Quote

  • Signs may include thinning canopy, curled or discolored leaves, sticky residue, premature leaf drop, holes in leaves, boring dust, dead branches, visible insects, or unusual bark activity. Some insect activity is minor, while other pests require treatment. An arborist evaluation can help determine the cause and severity.

  • No. Not every insect problem requires treatment. Some pests are temporary, cosmetic, or naturally controlled by beneficial insects. Samsara Tree Care recommends treatment only when the pest, tree condition, and site context justify intervention.

  • Treatment options depend on the pest and tree. Recommendations may include targeted sprays, systemic treatments, tree injections, soil applications, pruning, cultural care, or monitoring. Samsara Tree Care has licensed applicators in Oregon and Washington and selects treatment methods based on diagnosis and responsible product use.

  • Some pests can contribute to serious decline or death, especially when a tree is already stressed by drought, soil compaction, root damage, disease, or poor growing conditions. Early diagnosis can help determine whether treatment or supportive care may improve the tree’s outlook.

  • Product choice, timing, application method, site conditions, and label requirements all matter. Samsara Tree Care uses licensed applicator practices and considers nearby plants, people, pets, water, pollinators, and public access when recommending or applying treatments.

  • Sometimes. Preventive or seasonal treatments may be appropriate for certain recurring pests or high-value trees, but prevention should be based on known pest pressure and tree vulnerability. Good soil care, proper pruning, watering, and monitoring can also improve resilience.

Not every insect found on a tree is harmful. In fact, many insects provide important ecological benefits and serve as food sources for birds and other wildlife. Successful pest management begins with proper identification and understanding whether a pest population poses a significant threat to tree health.

Our arborists prioritize Integrated Pest Management (IPM) principles, which emphasize monitoring, prevention, cultural practices, biological controls, and targeted treatments when necessary. This approach allows us to protect valuable trees while reducing unnecessary pesticide use and supporting a healthier urban forest.