Vermi T Bio-CartridgeComes with cartridges only The Vermi T Bio Cartridge holds a plethora of biodiversity that isn't found in any other tea on the market. The coco woven husk that packages the dry ingredients mimics the root structure of a plant with its fibrous strands. A balanced and unparalleled mixture of thermophilic compost, earthworm castings and Alaskan humus make up the majority of the volume within the cartridge. The mixture is fortified with fossilized kelp