Each part is made from a specific material that is prepared in a certain way, perhaps even harvested at a very precise time. The yam garden is a metaphor for principles guiding daily life. Everything in it can be explained in spiritual or symbolic terms. Gardening is an art for the people of Tanna, and part of their religion. There are rituals for planting and cultivation, and periods when land must lie fallow.
Some produce is used in ceremonial exchanges.
Yams, kava, taro, manioc, corn, fruits, and a variety of greens are grown. Within a garden, each plant has complex spatial and temporal relationships with every other. Father to Son, Mother to Daughter Generosity is a value children learn by example. Working together and sharing with others are foundations of island life. From their parents, children learn the values and skills they will need as adults.