For people who live in areas covered by water during the monsoon season, such as the riverine areas of Bangladesh, it is impossible to grow crops. Practical Action has developed a technology to allow farmers to grow food on flooded land.
The floating garden is a clever solution that employs the use of water hyacinth, which is collected to construct a raft. This is then covered with soil and cow dung, in which vegetables can be planted. A new raft needs to be built every year, but the old one can be used as fertilizer during the dry season.