The Jiffy Professional Greenhouse 72 contains 72 Jiffy-7 Pellets compactly packaged in a reusable domed tray. All-natural Jiffy-Pots and Pellets are made of 100% biodegradable sphagnum peat moss and wood pulp. The pellets also contain a minor fertilizer charge plus lime to correct the acid pH of peat moss. Reduce transplant shock with Jiffy-Pots and Jiffy-7 Peat Pellets. Roots do not spiral inside the pot as with rigid containers, but naturally prune themselves as they come in contact with air.