CONCENTRATED LIQUID WORM CASTINGS: This product could not be more appropriately named. It’s totally organic and is made for us by red worms. They consume waste and pass a nutritiously rich ‘tea’ which is then processed to create this product. It is rich in the microbes plants need. It is, in short, one of the finest natural fertilizers available – Nature’s Gift to gardeners. Our liquefied worm castings concentrate is rich in plant nutrients and minerals which dramatically increase microbial life in the soil and subsequently stimulate plant growth more than any other natural product. It also helps to fight off root and plant diseases.