Meet Our Team

Meet Our Team


Elizabeth J. Sumner, President

Elizabeth Sumner became an owner of Greenline Landscape in 1992 after spending a number of years in the construction industry in Memphis and Knoxville.  She has worked for Gardner General Construction and Zellner Construction Company in office administration and with Sverdrup-Gilbane on the jobsite of the construction of a bulk mail facility for the USPS.  Elizabeth grew up in Louisiana, and attended Houston Baptist University in Houston, Texas.  She has served on numerous fund-raising committees at Madonna Learning Center, where her son attends school, as well as working to support various special needs organizations in and around Memphis.  Elizabeth holds a Tennessee Affiliate Broker’s License, and is in the process of obtaining her certification as a Pest Control Applicator (Horticulture, Lawn and Turf) in the state of Tennessee. Her hands-on experience in the field of management, specifically in landscaping, is the basis for her high standard of quality for the customers that we serve. Contact

John Sumner, Vice President

John Sumner attended Memphis State University and received advanced technological training from the University of Alabama and Georgia Tech, studying construction technology and music. He holds a Tennessee License for Pest Control Operator (Horticulture, Lawn and Turf), a Tennessee Contractor’s License and a Tennessee Affiliate Brokers’ License. He has held certifications for the testing and repair of backflow devices, pesticide applicator and the supervision of asbestos abatement contracts. Mr. Sumner is an Executive Director and Treasurer of the Memphis Airshow Organization, LLC, past vice-president of the Tennessee Irrigation Association, and a former board member of the Variety Club of Memphis, the Variety Children’s Charities and Special Kids and Families. For the past 25 years John has been active in the Memphis landscape business, working for seven years as a manager at Environmental Landscape Services before founding Greenline Landscape in 1991. Contact