Farmers grow their crops on long, thin vegetable gardens which float on a river. Each strip of land is between 200ft and 300ft long, and farmers cultivate up to 300 types of vegetable, navigating the channels between them by boat. The gardens rise and fall with the swelling waters of nearby rivers, which restrict the time that crops can be grown and make land a precious commodity for local residents. The area in Pirojpur, Bangladesh covering 400 hectares, shows the extraordinary array of crops include beans, beet, pumpkins, okra, aubergine, cucumber, red amaranths, gourds, turnip, cauliflowers, turmeric and chillies.