Made of composted organic material and a plant derived polymer. Naturally rich in beneficial microorganisms for maximum nutrient uptake. Provides optimum aeration and water penetration for expansive root development. Protects delicate young roots during handling and transplanting. Earth Plugs are an excellent medium for starting seeds or root cuttings. The re-formed plugs provide a flexible, aerated design that resist compaction and will not crumble. Earth Plugs promote fast, efficient plant establishment and superior root development for vigorous plant growth.