The fungicide methyl thiophanate, widely used to control some of the most common fungal diseases in crops, is metabolized in animals into benzimidazole compounds, including the reproductive toxicant carbendazim. However, standard toxicological tests did not indicate that methyl thiophanate may cause testicular toxicity and/or embryotoxicity, which are typical effects of many benzimidazoles

Clearys 3336 F is a systemic fungicide for the prevention and control of turf diseases and the diseases of annual and perennial flowers, bedding plants, foliage plants, ground covers, plus deciduous trees and shrubs. Foliar spray, dip and drench applications can be made. Active Ingredient: Thiophanate-Methyl – 41.25% Target pests: Diseases such as Anthrancose, brown patch, copper spot, dollar spot, gray leaf spot, leaf spot, red thread, snow mold, rust, smut, Fusarium, Summer patch, bermudagrass decline, take-all patch, etc. * See label for complete list For use in: Lawns and Turfgrasses, Bedding Plants, Annual and Perennial Flowers, Trees and Shrubs * See label for complete list


Thiophanate-methyl (Benzimidazole) is a broad-spectrum systemic fungicide that is absorbed by the roots and leaves of the treated plants. It has both protective and curative action. It is classified as group I fungicide. Since it targets a broad spectrum of diseases and plants, it has been used widely since 1973. It is recommended to alternate fungicides or tank mix this fungicide with other types of fungicides with different modes of action.

Southern Ag Thiomyl is a powerful fungicide that prevents annual and perennial flowers from turf diseases. Contains an active ingredient that is proven to be effective in controlling a wide range of plant diseases such as root, crown, and stem rots on ornamental plants. This broad-spectrum systemic fungicide is also beneficial to Deciduous and Evergreen trees and shrubs and controls various types of leaf spots like Black spot on roses.

Uses/benefits of Thiophanate Methyl

Thiophanate methyl is a fungicide that was used widely to control fungal diseases on crops. It has a low aqueous solubility, low volatility and tends not to be persistent in soil or water systems. It has a low mammalian toxicity, however it is an irritant, a skin sensitiser and may also be mutagen. It is moderately toxic to most aquatic organisms and earthworms but less so to birds and honeybees.

Features of Thiophanate Methyl

  • Thiomyl Systemic Fungicide/ Repackage Of Cleary 3336 Wp/ Treats Bulbs After Digging For Over-Wintering
  • Country Of Origin: United States
  • No Assembly Required
  • Brand Name: Southern Ag
  • Controls Many Stem, Crown & Root Rots/ Controls Many Leaf Spots Such As Black/Spot Of Roses/Contains: 50% Thiophanate Methyl/Wettable Powder/Use On: Roses, Many Ornamentals, &/Bulbs As A Bulb Dip/Controls: Anthracnose, Fusarium Blight,/Black Spot, Botrytis & Other Diseases On Ornamentals/Rate: Spray: 275 – 3 Teaspoon Gal For Most Uses; See Label/For Correct Rate/Application: Mix With Water, Apply As A Full Volume Foliar Spray

Mode Of Action

Thiophanate-methyl forms a protective barrier on plants and permeates the plant and moves upward in the plant’s xylem. It has protective activity which includes new growth and it has a good curative activity.


Product Dimensions2.75 x 2.75 x 6.25 inches
Item Weight6 ounces
ManufacturerSouthern Ag
Customer Reviews4.6 out of 5 stars    159 ratings
4.6 out of 5 stars
Best Sellers Rank#64,681 in Patio, Lawn & Garden
#374 in Weed & Moss Control
#1,879 in Soils, Fertilizers & Mulches
Is Discontinued By ManufacturerNo

Prices of Thiophanate Methyl

$30.99 – $150.99

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