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Spring is here! Check out the latest The Arbor Advisor — you'll find information on:
Root Invigoration

Give your plants a boost by loosening up compacted soil and adding beneficial organic matter. It all starts with our expert diagnosis and the creation of a Soil Health Program tailored to your landscapes needs. Lean more in this article.

Dogwood Anthracnose

Don't let this destructive disease wreak havoc on your favorite flowering tree. Learn to spot the signs of disease and how to prevent the spread of infestation. If you've seen cankers or brown blotches on your Dogwood, you won't want to miss this article.

Collier Arbor Care featured in TCIA's Tree Care Industry Digital Magazine

It's true — Collier Arbor Care only treats the plants that in need! Read all about it in a recent article featuring Terrill Collier.

Looking for an article on a particular topic? Be sure to peruse the back issues of The Arbor Advisor and browse through the Fact Sheets section. You can also use the search box at the bottom of the page to look up a subject.

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Collier Arbor Care 75th Anniversary Logo

2012 marks our 75th year of tree, shrub and lawn service to the Portland metro area!