Wild is the founder and CEO of both Boston Tree Preservation and Arborjet Inc., a manufacturer of tree injection systems and medicaments. Arborjet was designed by arborists for arborists in order to effectively manage and control, in an environmentally friendly way, the many exotic and native insect pests and diseases threatening our natural and urban forests.

With spraying and soil drenching becoming more and more controversial, Wild and his team recognized the need to update and rewrite the standard for trunk injection to improve the efficiency of product delivery, reduce tree wounding and improve the accuracy of dosage. Wild has consulted with royalty and officials in the United Arab Emirates on the date-palm weevil problem in the Middle East, as well as with leading experts on infestations in the United States involving the emerald ash borer, Asian longhorned beetle, hemlock woolly adelgid and mountain pine-bark beetle.

Boston Tree Preservation is an organic-based, proactive tree-care business founded in 1977. He was one of the first people to develop and use vermicomposting for fertilization and disease and insect pest management. He also developed Soil Solutions, the first completely organic lawn-care program in the Boston area.