A method for vermicomposting includes providing an underground cell comprising a bottom, sidewalls and an open top, layering a base bedding layer at the bottom of the underground cell, layering a bottom organic waste layer on the base bedding layer, layering a stack of one (1) or more intermediate bedding layers and one (1) or more one or more intermediate organic waste layers, alternating between an intermediate bedding layer and an intermediate organic waste layer, on the bottom organic waste layer to partially form a compost heap, layering a top bedding layer on a top organic waste layer of the stack of the intermediate bedding layers and the intermediate organic waste layers to form the compost heap, watering the compost heap at a predetermined watering cycle, introducing worms to the compost heap, aerating the compost heap at a predetermined aeration cycle, and harvesting compost from the compost heap.