Since 1937, family owned Collier Arbor Care has provided professional, personalized tree, shrub and lawn care services to the Portland area. We understand our local Northwest weather, our soil, the trees and plants that grow here and the problems that afflict them. We are recognized by our customers and by horticulture professionals for knowledge, experience, trusted advice, and the highest standards of workmanship. The continuing education of our staff brings your landscape the most up-to-date knowledge and techniques in the industry. As your trees, shrubs, and lawns grow healthy, so does our reputation. You can turn to Collier for these services: