This presentation provides a comprehensive introduction to how farmers and gardeners can more effectively conserve, improve, and utilize traditional coconut varieties. It emphasizes the incredible phenotypic diversity of the coconut palm and highlights the critical yet often underestimated role of farmers in maintaining and shaping this diversity over generations. A section explores four traditional Polynesian classification systems, in which coconuts are identified as “male” or “female” based on fruit shape, taste, or productivity. While these systems differ from scientific understanding—where each coconut tree is both male and female—they offer practical tools for farmers to select good seednuts. The course advocates a respectful fusion between traditional knowledge and scientific methods, promoting mutual benefit and farmer empowerment.