The Hammock Preserve & Nature Center was named in honor of James S. Castellow who was a farmer that claimed the 160 acres of property and made his homestead in early 1900. He was one of south Florida’s earliest citrus farmers. He carried citrus trees from the town of Cutler. Hugh Matheson, Jr. who had purchased the property in the 1950s for land trade but then the trade never happened. In 1962, Park included the tropical hardwood forest, which was a paradise for tree botanists and snail collectors.