Business at The Davey Tree Expert Company is as strong as an oak. The company's roots extend back to 1880 when John Davey founded the horticultural services firm, which branched into residential, commercial, utility, and other natural resource management services. With offices in the US and Canada, Davey's services include treatment, planting, and removal of trees, shrubs, and other plants; landscaping; tree surgery; and the application of fertilizers, herbicides, and insecticides. It also provides line clearing for public utilities, forestry research and development, and environmental planning. Davey has been employee-owned since 1979.