Nontoxic Jiffy-7 Peat Pellets are made of biodegradable sphagnum peat moss and coir fibers wrapped in ultra-thin netting. Pellets expand when watered, creating a natural seedling pot. The pellets also contain a specially formulated fertilizer to provide the best start for young plants. This is an economical case of 1,000 Jiffy-7 Peat Pellets.