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Since 1941, and after the passing of the Certified Tree Expert Bill in 1940, The Society of Certified Tree Experts was established. Fifteen men were the first to pass the exam administered by the New Jersey Department of Conservation and Development and it was those men who on the eve of July 23, 1941 marked the inception of the organization. This group is the conduit to the public through advertising , meetings, sponsorships, Community functions and consumer mediation. SLTE members include nearly 130 professionals and is growing each year as our services to the members and public increase.

These professionals are dedicated to the advancement of arboriculture and tree care professionalism through continuing education, public awareness and community service.