In traditional tumpangsari, farmers are entitled to plant food crops between the young forest trees for only about two years. In the integrated tumpangsari, they are also allowed to grow fruit trees, grasses and other kinds of plants between the timber trees during the whole rotation period of the forest crop. The various planting materials for the forest, as well as the non-forest trees, are provided by the Forestry Service. The farmers may harvest the fruits, fuelwood, grasses, medicinal and other plants during the rotation period of the forest crops.