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SCIENCE & conservation

ArbNet: The interactive community of arboreta

ArbNet is a worldwide network of tree-focused gardens and practitioners established by The Morton Arboretum in 2011 to:

  1. Foster the establishment and professionalism of arboreta
  2. Identify arboreta capable of collaborating in certain scientific, collections, or conservation activities
  3. Advance the planting and conservation of trees to improve the world. 

ArbNet provides a variety of tools and programs to support the common interests of tree-focused gardens, including:


The Morton Register of Arboreta, a database of the world’s arboreta and gardens dedicated to woody plants. It serves as the basis for engaging arboreta in the ArbNet collaborative network and helps identify institutions that have the interests and resources to participate in broader conservation activities such as those associated with the Global Trees Campaign.


The ArbNet Arboretum Accreditation Program, the only global program to officially recognize arboreta based on a set of professional standards.


The ArbNet website (ArbNet.org), provides a one-stop source for arboreta worldwide to access tree-focused news, advice, resources, discussion forums, and potential collaborators.


The American Chestnut Foundation (TACF) collaboration. In partnership with ArbNet, TACF has developed outreach packages to teach arboretum visitors about the catastrophic loss of the American chestnut (Castanea denata) to the fungal pathogen Cryphonectria parasitica over the past one hundred years. The packages include seeds, seedlings, and educational materials showcasing the American chestnut and its past and current restoration efforts. The seedlings include American and Chinese chestnut (Castanea mollissima) species and disease-resistant Restoration Chestnut 1.0® hybrids developed from these species by TACF.


ArbNet is sponsored and coordinated by The Morton Arboretum in cooperation with the American Public Gardens Association and Botanic Gardens Conservation International.


To participate and learn more, visit the ArbNet website.