We pride ourselves at Davey Tree on providing prompt, professional and personalized service from certified arborists that live, work and engage in your community. Contact one of our Davey Tree specialists for your residential, commercial, utility, or environmental needs.

Thomas Whitney, PhD
Technical Advisor- Entomology. ISA Certified Arborist. Research. Tree Pest / Disease Diagnostics. Tree Risk Assessment Qualified
Thomas joined Davey in 2020 as a technical advisor. In his role, Thomas specializes in tree pest management. He offers regional and companywide plant health care consultation and training in Oregon, Washington, British Columbia, and Alberta. Thomas also works on integrated pest management research, where he is currently exploring the efficacy of augmentative biological control on urban tree pests.
Thomas is an ISA certified arborist and Tree Risk Assessment Qualified.