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New Project Assessing the Conservation Value of ex situ Collections

In order for ex situ collections to be suitable for use in conservation and restoration work, they must be of known origin and be genetically representative of the species being conserved. Although the extent to which existing ex situ collections are genetically representative is currently unknown, a recent study by BGCI on Zelkova ex situ collections showed that many of the collections consisted of relatively few individuals, the collections were frequently of unknown origin and many had inadequate documentation.

In order to assess the genetic diversity of ex situ collections and compare this with wild diversity, a new project has been initiated by BGCI and the Botanical Garden of Ghent University. The project will focus on selected species of three unrelated Angiosperm groups – Hydrangea, Magnolia and Cactaceae.

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ArbNet is an online, interactive community of arboreta that supports the common purposes and interests of tree-focused public gardens. More. ArbNet is sponsored and coordinated by The Morton Arboretum; inquiries to

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The Morton Register of Arboreta is a comprehensive list and database of arboreta and other public gardens that have a substantial focus on woody plants. More. Accreditation for arboreta is also available. Sponsored and coordinated by The Morton Arboretum (

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An arboretum is a specialized type of botanical garden that focuses on trees and other woody plants. More. A principal goal of arboreta is to encourage and support the planting and conservation of trees.
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