New Jersey is home to many rare and endangered plant species. The management and conservation of these species is essential to the maintenance of healthy, functioning ecosystems here and elsewhere. The Natural Heritage Program and the Trust within the Office of Natural Lands Management are committed to the conservation of rare plant biodiversity within the state. This document addresses the need for a deeper understanding of the issue and provides a review process for rare plant reintroduction proposals. It provides a thorough examination of the scientific literature on rare plant reintroductions, including examples of both successful and unsuccessful reintroduction projects, key findings, and lessons learned. It includes guidelines for components of rare plant reintroduction proposals, a checklist for practitioners and reviewers, and reputable contacts for further information.