Description Item Details Provided By KnowingNature: Each disc expands to approximately 2 cups, which is the exact amount needed for 1 planting in your KnowingNature Planter. Made from the husks of coconuts, coco coir is a renewable resource & popular sowing mix. Coco coir has become one of the most popular ways of growing microgreens. Coco coir discs are a great way to save space and avoid moving around heavy bags of potting mix.
