Rapid Rooter's technology produces a unique matrix of composted organic material bound together by plant-derived polymers. Rapid Rooter is created through a scientifically controlled process that produces large populations of beneficial microbes in the plug media. These naturally occurring beneficial microbes colonize young roots and help young plants to resist disease while maximizing nutrient uptake. Rapid Rooter plugs are fortified with General Hydroponic micro-nutrients for abundant root growth. The optimal air-to-water ratio within the plug matrix causes explosive early root growth. Use Rapid Rooter for robust early rooting that promotes explosive plant growth. The Rapid Rooter Tray has 50 plugs for your propagation needs.