Standards are specific principles or criteria, established by authority or convention.
The National Arborist Association is working with ANSI, along with representatives of the nursery, landscape, and tree care industries, as well as university researchers. To begin with, they provide a uniform vocabulary for tree care. The standards also clarify the job to be done, protecting both parties. In addition, using them will promote good arboricultural practices . Tree care terms and techniques are defined carefully, and their appropriate use is explained.