The National Policy and Legal Analysis Network (NPLAN) and Public Health Law and Policy (PHLP) have put together a helpful legal guide that includes samples of the most important contracts community garden groups will need.
Ground Rules: A Legal Toolkit for Community Gardens
Along with a very thorough lease, they’ve also included a gardener’s agreement (to be signed by each individual gardener), a set of community garden rules, and a checklist of legal issues to discuss in person at community garden meetings to make sure everyone understands their responsibilities.