This document is meant to serve as a guide for those establishing, managing, and/or supporting the development of a metacollection site(s) for one or more priority oak species. This is a dynamic document, as updates will be made on a quarterly basis and/or as new information becomes available that is relevant to include. This document provides information for developing metacollections for oaks native to the United States, but we hope this approach will be applicable in other regions. Also, we are planning to adapt this document into other versions which would incorporate information and guidelines for the other priority oaks around the world.