Eco-Logic-Tree, LLC is a company striving to promote the well-being of our landscapes in an ecological manner.

We continually strive to update our technical knowledge of the horticultural world. Our background includes a Bachelor of Science degree in horticultural science, as well as additional industry training and certifications.

We utilize ISA certified arborists on staff to assist with all of your tree care needs. "The International Society of Arboriculture is a worldwide professional organization dedicated to fostering a greater appreciation for trees and to promoting research, technology, and the professional practice of arboriculture."

We also retain licensed Oregon Department of Agriculture, Certified Commercial Pesticide Applicator personnel to provide you with chemical expertise where necessary.

Please feel free to contact us regarding issues important to you and your landscape.

David Sip


With a degree in horticulture and over 20 years in the trade, David’s passion for nature has given him the opportunity
to work with trees across the country resulting in his multi-regional experience. After finding a new opportunity, he moved to Oregon in 1998, where he founded an arboricultural company on the Oregon coast.  

David is an ISA Certified Arborist and consultant with over 20 years of experience. With a sincere admiration for trees and the natural world his perspective as an arborist looks at what we can do “for” our trees rather than “to” our trees.  

With each project he works on his focus is tree stewardship, while taking into account client needs and expectations. David enjoys educating clientele about the requirements of their plants, and feels it’s an arborist’s responsibility to do so. Caring for trees as David does will help ensure that we can preserve our trees for generations to come.