Don't Let Soil-Borne Diseases Ruin Your Vegetable Crop Harmful soil fungi like pythium and fusarium cause root diseases that can devastate the most promising plants. Our all-organic Root Shield forms a defensive barrier right from the start. This university-tested beneficial fungus forms a symbiotic bond with plant roots, protecting them from soil pathogens all season long. Add it to potting soil or mix with water to use as a drench.
