RootShield® PLUS+ Granules Biological Fungicide is a preventative biological fungicide for control of soilborne plant pathogens and plant root diseases. The active ingredients are microbes, Trichoderma harzianum Rifai strain T-22 and Trichoderma virens strain G-41, that, when applied as an inoculant to soil or to planting mixes, grow onto plant roots as they develop and provide protection against plant root pathogens such as: