The live microbes and natural nutrients in the Culture Cube germination kit produce healthy seed starts and root cuttings. Organic soil, vermiculite and volcanic pumice provide the perfect water to air ratio for strong root growth. These unique cubes were developed with no peat or animal waste (except all vegetable worm castings). The kit contains 12 cubes in tray with clear lid, worm casting mix for seed topping, 1 oz. worm tea concentrate for watering and additional microbial activity and complete instructions. Plan now for fresh lettuce and herbs on your kitchen windowsill this winter.