Seedy Saturdays are a remarkable phenomenon. They are not one event, but a series of separate events, which have sprung up across the country, each individually and uniquely organized under the same general themes of encouraging the use of open-pollinated and heritage seeds, enabling a local seed exchange, and educating the public about seed saving and environmentally responsible gardening practices. They usually occur on a Saturday, hence the name, but also occur on Sundays and other days.