Give your plants the benefits of one of natures most potent natural fertilizers. TerraCycle Plant Foods are 100% liquefied worm castings—made by feeding millions of worms a balanced, all-organic diet. Completely odorless and ready-to-use, they can be applied weekly to any type of plant, indoors or out. Packaged in recycled soda bottles. Ready-to-use liquid formulas Gives stressed plants a boost Builds up pest resistance Adds beneficial microorganisms to the soil