Shademaker is a division of World of Green, Inc. (founded in 1971). Tree Farm is located just north of the Dallas-Fort Worth Metroplex on 133 drip irrigated, fertigated and intensively managed acres close to Collinsville, Texas. Extensive Tree Growing, Harvesting and Transplanting experience allows us to consistently produce exceptional quality shade and ornamental trees such as 45 to 300+ Gallon Oaks, Pistache, Cypress and Maples. We also grow 3-8" Caliper Root Enhanced field-grown shade and ornamental trees. 10"+ Caliper SPECIMEN Trees Available. Established in 1971, World of Green, Inc. is a pioneer in the field of mechanized tree harvesting and transplanting. Over that time, we've positively influenced tree equipment design, chemicals and tree transplanting practices