Home gardens, also known as forest gardens, are found in humid areas. They use inter-cropping to cultivate trees, crops, and livestock on the same land. In Kerala in South India as well as in northeastern India, they are the most common form of land use; they are also found in Indonesia. One example combines coconut, black pepper, cocoa and pineapple. These gardens exemplify polyculture, and conserve much crop genetic diversity and heirloom plants that are not found in monocultures. There are now efforts to apply a similar concept in temperate climates (forest gardening).