A housing for a worm farm includes a composting cavity that, in use of the housing, is to contain worms, bedding material and/or organic waste, the composting cavity being defined by a floor having openings through which castings can pass, and one or more side walls that extend around the floor. A support structure supports the floor and the side walls above a ground surface. A cover locates on the side walls and extend over the composting cavity, and is movable to enable access to the composting cavity. A castings receptacle is movable between an operative position and at least one displaced position.