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This guidebook was first developed in 1921 as a standardized system of sizing and describing plants to facilitate the trade in nursery stock. For instance, the standards establish common techniques for:
In other words, this book is a communication tool, and does not provide buyers with any assurance of the health or quality of the nursery stock being specified or sold.
In order to locate the specifications for a particular plant, you should know:
American Standard for Nursery Stock (NurseryTrees.com)
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