This document reviews garden-based learning (GBL) and its role in basic education globally. It defines GBL as an approach to learning, not a single discipline, drawing from various fields. The authors collected information through surveys of GBL practitioners and site visits to programs in developed and developing countries. They analyze the theoretical foundations and evolution of GBL, review literature on impacts, and identify best practices and products of model programs. The authors conclude GBL offers an effective strategy for basic education and sustainable development when implemented skillfully with adequate resources.