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RootShield® Seed TreatmentRootShield Seed Treatment for Plants and Turf
Biological Seed Disease Control

OMRI Listed

RootShield® Seed Treatment naturally protects seeds and plants from soil-borne diseases such as RootShield Seed Treatment Bag Sizes Buy HerePhytophthora as well as Pythium, Rhizoctonia, and Fusarium as well as other plant diseases. RootShield Seed Treatment is a preventative biological fungicide for control of plant diseases. The active ingredient is a microbe, Trichoderma harzianum Rifai Strain T-22, which when applied to seeds, grows onto plant roots as they develop and provides protection against plant root pathogens such as Pythium, Rhizoctonia, Fusarium, Cylindrocladium and Thielaviopsis. RootShield Seed Treatment can be used alone or in conjunction with certain chemical fungicides; consult the appropriate tank mix compatibility charts listed below.

RootShield Seed Benefits

• Use for commercial seed treatment of edible crops, ornamentals and turfgrass.
• Suitable for applying to seed via slurry, in coatings, in pelleting, or during seed priming.
• Shields seeds from pathogens that exist in soil during early development stages.
• Maximizes the performance potential of each seed.
• Preventative control of major soil-borne root diseases including Pythium, Fusarium, Rhizoctonia.
• Grows on roots “shielding” them from root damaging fungi.
• Can be tank mixed and is compatible with many chemicals.
• 4-hour REI

RootShield Seed treatment is organic and will save future costs for fungicide treatments. Get Ahead!

Labeled for the Following Diseases:

RootShield Seed Disease CoveragePythium
• Phytophthora
• Rhizoctonia
• Fusarium
• Cylindrocladium
• Thielaviopsis

General Treatment

RootShield Seed Treatment can be applied as a slurry, a coating, in a pellet, or during seed priming.
General Treatment: Apply 1-10 ounces of RootShield Seed Treatment per hundred weight of seed (application rates vary based on seed size and density).  For more information on rates for specific crops, see details here.
For Potatoes, Other Root and Tuber Vegetables and Bulb Vegetables: For planting or storage, treat at 0.03 – 0.20 pounds RootShield Seed Treatment to 100 lbs. (1 cwt) of bulbs, seed tubers or cut potato seed pieces. Alternatively, dip bulbs, seed tubers or cut potato seed pieces in a suspension consisting of 1.0 – 3.0 pounds of RootShield Seed Treatment in 20 gallons of water.
*DO NOT APPLY RootShield Seed Treatment to sugarcane, pechay, rice, mushrooms, kiwi, tobacco, barley, oats, lemon, apple and chickpea. Not for use on aquatic crops.

For Additional Application Information Click Here

Active Ingredients (WP and Granular)

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

Available Sizes:

• 1 pound bag.
• 3 pound bag.
• 30 pound bag.
*Convenient 1.5 ounce scoop packed with product.


RootShield Seed Treatment 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.

RootShield Compatibility Chart