Dennis Seven Dees Landscaping is carrying on a near 50-year family tradition of providing a variety of gardening products and information. The company owns and operates garden centers that are designed to provide an array of gardening products and supplies, as well as expert advise from an experienced staff. Dennis Seven Dees Landscaping has four full-service garden centers in the Lake Oswego, Cedar Hills, Eastside and Seaside communities of Portland, Ore. The company is also a full-service landscape contracting and maintenance company that serves residential and commercial clients. Dennis Seven Dees Landscaping s services include commercial landscape construction, residential design and build services, landscape management and maintenance, and special services and enhancements.