In April 2011, The Morton Arboretum launched ArbNet and arbnet.org, an interactive community of arboreta and tree professionals designed to support the common purposes and interests of tree-focused public gardens. The Arboretum Accreditation Program was established through ArbNet at the same time to provide specific standards of professional practice and offers four levels of accreditation. In tandem, we created the Morton Register of Arboreta – a global database of arboreta and other public gardens that have a substantial focus on woody plants.

Since its inception, ArbNet has accredited over 700 arboreta, across 42 countries. In 2022, ArbNet was honored with the American Public Gardens Association Program Excellence Award. Into the next decade, ArbNet will engage its large, and growing audience, by continuing to support gardens in reaching their professional goals and milestones, sharing best practices and resources, improving urban forestry by supporting municipal tree collections, building capacity for smaller arboreta through grants and professional opportunities, establishing arboreta in biodiversity hotspots to facilitate conservation, supporting tree conservation efforts through partnership and networks, and finally, supporting scientific and horticultural research in arboretum collections of all sizes.

The ArbNet program is unique and impactful, which can be seen by its global footprint and diversity of arboreta. ArbNet supports a greener, healthier, and more beautiful world.

ArbNet's founding organization, The Morton Arboretum, is an internationally recognized tree-focused botanical garden and research center. Its 1,700 acres of beautiful tree-filled landscapes are a place of enjoyment, a vibrant hub for nature education, and a world-renowned center for scientific research that studies trees and how to sustain them. As a nonprofit organization, the Arboretum’s mission is to collect, study, display, and conserve trees and other plants from around the world to inspire learning, foster enjoyment, benefit communities, encourage action, and enhance the environment.