Bioworks Rootshield Plus G 500 Lb OMRI (DIRECT) ( Trichoderma harzianum strain T-22, Trichoderma virens strain G-41 )

Preventative control of major root diseases including Phytophthora, Rhizoctonia, Pythium, Fusarium, Thielaviopsis and Cylindrocladium. Grows on roots "shielding" them against root damaging fungi. One application provides up to 12 weeks of protection. Contains two active ingredients (Trichoderma harzianum strain T-22 and Trichoderma virens strain G-41).