The National Greening Program (NGP) is the Philippines' largest reforestation initiative, launched in 2011 with a goal of planting 1.5 billion trees over 1.5 million hectares, later extended to 2028 for an additional 1.2 million hectares. The program aims to enhance forest cover, reduce poverty, and improve biodiversity alongside community engagement, although it faces challenges like land tenure issues and unsustainable practices. Implementation involves harmonizing efforts across sectors, providing incentives, and using advances in science and technology.