Jiffy peat pots are excellent for plant fast growth and strength. The peat pots allow the roots to grow through the pot, which minimizes plant shock when transplanting. The peat pots are made from select sphagnum peat and recycled wood fibers. The pots do not contain added fertilizers or chemicals except a small amount of dolomite lime used to optimize pH. The peat pots are 100% biodegradable.