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RootShield® PLUS
Biological Root Disease Control – Granules and Wettable Powder

Exempt from CT EPA Regulations on K-8 and Municipal Parks!

RootShield Plus Study

RootShield® PLUS naturally protects plants from soil-borne diseases such as RootShield Plus Bag Sizes Buy HerePhytophthora as well as Pythium, Rhizoctonia, and Fusarium as well as other plant diseases. Easy to mix into media, RootShield PLUS now contains two active ingredients, Trichoderma harzianum Rifai strain T-22 and Trichoderma virens strain G-41. When applied, these microbes colonize plant roots and protect from damping off caused by common soil pathogens. RootShield PLUS also produces stronger root systems that have greater soil exploration and moisture uptake, resulting in better plant quality and marketability. RootShield PLUS is compatible with many commonly used fungicides, fertilizers, insecticides, and herbicides. It is an excellent tool for fungicide reduction and resistance management.

Root Shield Plus Benefits

• Next generation RootShield that now prevents soilborne Phytophthora, and improved control of hot season Pythium (P. aphanidermatum).
• Also controls Fusarium, Pythium, Rhizoctonia, Thielaviopsis and Cylindrocladium.
• 0-hour REI / 0-day Pre-Harvest Interval (PHI).
• Costs less than 2¢ per 6-inch pot.
• Promotes a healthier root system, increasing root mass potential.
• For media incorporation – nursery, greenhouse and vegetables.
• One application provides up to 12 weeks of protection.

RootShield Plus is organic and environmentally-friendly, can be used against many soil diseases and is safe for pets, animals and children.

Labeled for the Following Diseases:

RootShield Plus Results Pythium
• Phytophthora
• Rhizoctonia
• Fusarium
• Cylindrocladium
• Thielaviopsis

General Treatment

Granular: Apply RootShield Granular at a rate of 3 to 4.5 tablespoons per cubic foot of potting soil. For larger blend rates, use at 1 to 3 pounds per cubic yard of mix.
Wettable Powder: Apply RootShield WP at a rate of 1 to 2 tablespoons per 5 gallons. For larger blend rates, use at 3 to 8 ounces per 100 gallons. For trays/flats/liners less than 4 inches deep, use 50-100 gallons per 800 square feet. For 4 inch or deeper, use 100 gallons per 400 square feet. For 6 inch pots, use 1 cup per pot.
Frequency: Re-apply RootShield every 10-12 weeks or when transplanting/up-planting to larger containers or out into fields.

For Additional Application Information Click Here

Active Ingredients (WP and Granular)

Trichoderma harzianum Rifai strain T-22* ........ 1.15%.
Trichoderma virens strain G-41** ..................... 0.61%.
*Contains at least 1.0 x 107 colony forming units per gram dry weight.
**Contains at least 5.3 x 106 colony forming units per gram dry weight.

Available Sizes:

RootShield Plus Results Wettable Powder:
• 1 pound bag.
• 3 pound bag.
• 30 pound bag.

• 10 pound.
• 40 pound.
• 500 pound.
• 1,000 pound.


RootShield is compatible with many products commonly used in tank mixes by plant, tree and turf care professionals. Our scientists have tested various products for tank mixing compatibility. Please see the chart below. If you have questions or compounds that you would like to mix with RootShield and do not see them on our list, please contact us or submit the sample submission form below.

RootShield Compatibility Chart

RootShield Sample Submission Chart

Wettable Powder: