Worm castings are a safe, and natural way to provide your houseplants, flowers, & vegetable gardens with all the slow-release nutrition they will need to thrive and provide you with beautiful blooms, and bountiful harvests. They contain billions of beneficial microbes that not only feed your plant with all the slow-release nutrition it needs, but improves water retention & soil quality, fends off soil-borne disease, and also acts as a natural pest repellant!