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Trichoderma virens (formerly Gliocladium virens)

This pesticide active ingredient is a naturally occurring fungus found throughout the United States. When the spores are mixed with soil or other growth media, they prevent plants from becoming infected with rots and various other fungal diseases. Gliocladium virens GL-21 is approved for consumer use as well as commercial use, at various indoor and outdoor sites. No risks to humans, pets, or the environment are expected from use of this active ingredient.