This document provides a conceptual framework for green care by defining key concepts and approaches. It examines how nature can benefit human health and be used therapeutically. The framework outlines various green care methods like care farming, horticulture therapy, and ecotherapy. It explores theories that help explain nature's influence on well-being and ties green care to fields like health promotion, social inclusion, and agriculture. The conclusion discusses evidence that nature can aid medical and psychiatric treatment and calls for further research on integrating nature into care.