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RootShield WP Biological Fungicide, OMRI Listed, BioWorks

Quick overview RootShield WP Biological Fungicide based on the highly-effective hybrid fungus Trichoderma harzianum, strain T-22, RootShield protects roots from many pathogens including Pythium, Rhizoctionia, Fusarium, Thielaviopsis and Cylindrocladium.

Organic Certification(s): OMRI
Active Ingredient: Hybrid fungus Trichoderma harzianum, strain T-22

Signal Word - CAUTION / PRECAUCION

Perishable Product SALES ARE FINAL. No refunds, returns, or exchanges. This product is perishable.

RootShield WP Biological Fungicide is based on the highly-effective hybrid fungus Trichoderma harzianum, strain T-22, RootShield protects roots from many pathogens including Pythium, Rhizoctionia, Fusarium, Thielaviopsis and Cylindrocladium. Within 24 hours RootShield blocks and actively attacks pathogens by “eating” them: ensuring uninterrupted plant growth. Drenching RootShield WP wettable powder into the soil protects roots for up to 12 weeks and costs less than 1¢ per 6-in pot.


RootShield WP is a preventative biofungicide and should be applied to “clean” plants. Diseased plants should be chemically treated first, since the aggressively growing active ingredient, strain T-22 only grows on the outside of roots and does not enter the plant tissue. RootShield is compatible with fertilizers, algaecides, insecticides, disinfectants, miticides, herbicides, growth regulators, and nearly all fungicides.

Product description

RootShield WP Biological Fungicide is based on the highly-effective hybrid fungus Trichoderma harzianum, strain T-22, RootShield protects roots from many pathogens including Pythium, Rhizoctionia, Fusarium, Thielaviopsis and Cylindrocladium. Within 24 hours RootShield blocks and actively attacks pathogens by “eating” them: ensuring uninterrupted plant growth. Drenching RootShield WP wettable powder into the soil protects roots for up to 12 weeks and costs less than 1¢ per 6-in pot.


RootShield WP is a preventative biofungicide and should be applied to “clean” plants. Diseased plants should be chemically treated first, since the aggressively growing active ingredient, strain T-22 only grows on the outside of roots and does not enter the plant tissue. RootShield is compatible with fertilizers, algaecides, insecticides, disinfectants, miticides, herbicides, growth regulators, and nearly all fungicides.

Product variants
RootShield WP Biological Fungicide, OMRI Listed, 3 Lbs.
RootShield WP Biological Fungicide, 3 Lbs.
RootShield WP Biological Fungicide based on the highly-effective hybrid fungus Trichoderma harzianum, strain T-22, RootShield protects roots from many pathogens including Pythium, Rhizoctionia, Fusarium, Thielaviopsis and Cylindrocladium. OMRI Listed.
Delivery date: 3-5 Days, Ships by "UPS Ground" from Manufacturer
$289.95
Additional information
Manufacturer: BioWorks Inc.
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