Evergreen Arborist


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Biographical and Contact Information

Dennis Tompkins of Sumner, WA is a Certified Arborist, urban forester and WSU (Washington State University) Master Gardener. He has been certified by the International Society of Aboriculture (ISA) since 1994 (license: PN-0496) as a Certified Aborist and as a Certified Tree Risk Assessor (PNW-485) since 2008.

Dennis received the 2007 "Arborist of the Year" award from the Pacific Northwest Chapter of the ISA. He has been an instructor at various tree root disease workshops.

He also has been a consultant to the Pacific Northwest Christmas Tree industry since 1976. After 19 years, he recently retired as the Editor of The American Christmas Tree Journal, a publication of the National Christmas Tree Association. He has written over 200 articles, features and editorials regarding the industry.

Dennis was presented with the prestigious 2012 "Outstanding Service Award" by the National Christmas Tree Association at the organization's national convention in Sacramento, CA.

Dennis had a monthly "Arborist column" in the The News Tribune newspaper for five years. He currently publishes a monthly column in the Bonney Lake-Enumclaw-Maple Valley Courier Herald newspapers and contributes to various other publications. Subjects include pruning techniques, insect and disease pests, tree disputes, tree health and other issues of interest to homeowners that have tree concerns. Selected topics can be viewed under the "Articles" link.

He is a member of several professional associations:

International Society of Arboriculture (ISA)
Pacific Northwest Chapter of the ISA
National Christmas Tree Association
Pacific Northwest Christmas Tree Association
Puget Sound Christmas Tree Association
Plant Amnesty



Dennis Tompkins

253 863-7469