Big O Tree and Lawn Service is an independent, family-owned Virginia company committed to maintaining the health of your trees, landscaping, and lawn. Landscaping and Tree Services We offer a comprehensive range of tree and lawn care services, including turf treatment, plant health care (PHC) monitoring, tree pruning, tree removal, and weed and pest control. We also provide free information for download about common lawn and tree issues that affect Virginians. Certified Arborists When you work with Big "O" you gain the expertise of certified aborists to keep your property in its best condition. We have more certified arborists than any other company in our service area.