3336F Fungicide

5 out of 5 stars 61 Reviews | 112 Q&A

3336F Fungicide

Buy 2 or more: $73.41 each

Bundle and Save Offer!
Get Monterey Mark-It Blue 8 oz. with your purchase* for only $5!  Use Code BLUE5 at checkout.  *See Details

Have a Question? Ask Our Pros!

Email Our Pros
We're here to help
Live Chat
Offline. Leave Us a Message

You May Also Need

Average Rating

5 out of 5 stars Rating: 4.8

61 Reviews | 112 Q&A

Product Overview

3336F Turf and Ornamental Systemic Fungicide, formerly Clearys 3336F Turf and Ornamental Systemic Fungicide, prevents and controls turf diseases and the diseases of annual and perennial flowers, bedding plants, foliage plants, ground covers, and deciduous and evergreen trees and shrubs.

This broad spectrum fungicide has preventative, curative, and systemic properties, making it a smart choice for commercial turf and ornamental applications. Drench, foliar drip, and spray applications can be made using 336F.  

3336F Fungicide can be used on fine turf applications including commercial, residential, public (parks, athletic fields, schools) and golf courses. 3336F is not phytotoxic when used according to the label.

Containing the active ingredient Thiophanate-methyl, commonly known as T-Methyl, it controls many fungal diseases including cool season brown patch, snow mold, dollar spot, large brown patch, leaf blight, and summer patch. See product label for a complete list of controlled diseases.

Features and Specs

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
Application * See label for complete application instructions
Formulation Professional Product
Group 1 Fungicide
CT, NY (Restricted to Licensed Applicators Only)
Shipping Weight 2.80 lbs
Manufacturer Nufarm
UPC 191662013924
EPA Registration 1001-69


Tank Mixing

3336F can be tank mixed with the most commonly used pesticides. When tank mixing with other materials, add products in the following order:

  • Water Soluble Bags
  • Wettable Powders
  • Dry Flowables
  • Liquid Flowables
  • Emulsifiable Concentrates
  • Soluble Materials (such as fertilizers)

*Do not tank mix with copper-containing materials or with highly alkaline pesticides, such as Bordeaux mixture or lime sulfur

Consult product label for tank mixing rates and instructions.

Disease Control

3336F can be used to control a variety of fungal diseases, including the following:

  • Anthracnose (basal and foliar)
  • Bermudagrass Decline
  • Take-All-Patch
  • Cool Season Brown Patch
  • Necrotic Ring Spot
  • Spring Dead Spot
  • Coprinus Snow Mold
  • Dollar Spot
  • Large Brown Patch
  • Ascochyta Leaf Blight
  • Copper Spot
  • Fusarium Patch
  • Red Thread
  • Zoysia Patch
  • Fusarium Blight
  • Gray Lead Spot (Blast)
  • Leaf Spot
  • Pink Snow Mold
  • Rusts
  • Stripe Smut
  • Summer Patch
  • Bentgrass Dead Spot

See product label for mixing rates and when to apply.

Horticulture Applications

336F is effective as a pre-plant dip on cuttings and bulbs and can also be soil drenched for crop protection.

Diseases controlled by foliar applications include:

  • Anthracnose
  • Black Spot of Rose
  • Brown Rot and Blight
  • Fusicladium and Venturia Leaf Scabs
  • Leaf Spots and Blight
  • Powdery Mildews
  • Rust Diseases
  • Twig Blights, Cankers, and Diebacks

Diseases controlled by soil drench applications include:

  • Stem, crown, and root rots
  • Black root rot

Diseases controlled by plant dip applications include:

  • Plant or cutting diseases
  • Bulb, corm, and rhizome rots

See product label for application rates and when and where to apply. Do not use fruit, nuts, or sap from treated trees and food or feed

5 stars   52
4 stars   7
3 stars   0
2 stars   0
1 star   2
Review Search   
Sort Reviews
  • 5 of 5 Stars


    By Bubba on 10/16/2010

    Great product. After only 2 applications 10 days apart fungus (black spot) is gone. MAKE SURE YOU READ ABOUT THIS PRODUCT AND ALL FUNGICIDES BEFORE YOU BUY. MAKE SURE YOU ARE USING LOCAL/HORTICULTURAL CONTROL -- you know cleaning up fallen leaves, turn your mulch, trim bad leaves/areas, soaking your trimming equipment in 10% bleach, etc. Know what you are dealing with and know that it is a fungus first. Secondly, make sure you consider a spray program and always use fungicides from different classes in order to not create resistance. In other words, if you use Cleary all the time there is a good chance you will create a resistant strain of fungus and then Cleary will not work any longer. An hour or two of reading on the internet is well worth it and your plants will thank you for it. The only problem is that this fungicide is the only COMMERCIAL, HIGH GRADE fungicide that Do My Own Pest Control has in stock. I would like to see Procure 480sc added as well as Lime-Sulfur 29% so that customers can help prevent resistant fungi by using alternating products. This would also ensure that you eliminate the fungus you have by attacking it alternately with different fungicides with completely different modes of action. Cleary 3336F is AWESOME and what the big guns use.

    Was this review helpful to you?  YesNo

    163 of 164 people found this review helpful

  • 1 of 5 Stars

    Fungicide knowledge

    By Lyle on 08/27/2012

    Verified Purchase

    I purchased two different fungicide products from DoMyOwnPestControl, so I was surprised when I wrote them with a question about the products. I was advised that they didn't know much about it having just started selling fungicide. I was told tocontact my County Agricultural Office. Their response left me feeling not very confident on their expertise!!!! I would think if you are going to sell fungicide products, you ought to be VERY knowledgeable about its' uses, etc.

    Was this review helpful to you?  YesNo

    82 of 245 people found this review helpful

  • 5 of 5 Stars

    very effective fungicide

    By Anonymous on 06/03/2013

    Verified Purchase

    I have been using this fungicide for several years. It is very useful against a wide variety of fungii. Since it is a systemic, that makes it even more effective. I primarily use it on orchids where I spray it on the roots as well as the stems and leaves.

    Was this review helpful to you?  YesNo

    43 of 44 people found this review helpful

  • 5 of 5 Stars

    Clearys 3336F Fungicide

    By Garry on 07/15/2014

    Verified Purchase

    Within days of application, you could see improvement. At the 1 week mark, the empire zoysia was repairing itself. Could not be more pleased.

    Was this review helpful to you?  YesNo

    37 of 37 people found this review helpful

  • 5 of 5 Stars

    Great access to great products

    By Gary on 09/12/2011

    Verified Purchase

    This is a wonderful product from a great company. I am a serious amateur gardener and grower who cannot find many of these pro cuts in normal sources. Keep up the great work!

    Was this review helpful to you?  YesNo

    24 of 32 people found this review helpful

See all 61 customer reviews

Questions & Answers

Have a question about this product?
Sort Questions
How many ounces are in a quart? How many ounces of fungicide, mixed in water, per 1,000 square feet?
There are 32 ounces in one quart.The mixing rates of Clearys 3336F can vary,
Foliar sprays- .5 to 1.5teas per gallon or 8-24 oz per 100 gallons, dip- 1-1.5 teaspoon per gallon or 16-24 oz per 100 gallons, drench- 1/2 to 1 teasoon per gallon or 8-16 oz per 100 gallons. Please read the label for specific use instructions and use rates.

Was this answer helpful to you?  YesNo

103 of 125 people found this answer helpful

Does Clearys 3336F need to be watered in after application?

Yes, Clearys 3336F Fungicide will need to be watered in 24-48 hours later with what would be equivalent to approximately 1/2 inch of rain.

Was this answer helpful to you?  YesNo

85 of 89 people found this answer helpful

My extension service recommends 3336 WP for peach tree fungus. Is 3336F the same thing?
Yes it is.  Clearys 3336 comes in many forms.  3336 WP stands for a wettable powder, which is just a powder that you mix with water.  3336F stands for flowable, which is a liquid concentrate that you mix with water.  Both make the same solution but it just comes in different forms for mixing.  Some people like working with powders and others like the liquid form, but the results will be the same.

Was this answer helpful to you?  YesNo

71 of 72 people found this answer helpful

Can Clearys 3336F be used with a hose end sprayer or does it require a tank sprayer to apply?
You could use a hose end sprayer to apply Clearys 3336F as long as you can properly calibrate it to spray the recommended amount of product per gallon of water. We carry the Chapin Hose End 6005 sprayer that will spray small amounts 1 teaspoon or 1/6 of an oz) all the way up to larger amounts of 4 oz of insecticide per gallon of water. We do like using hand pump sprayers for most pesticides however because there is no possibilty of mixing mistakes.

Was this answer helpful to you?  YesNo

58 of 67 people found this answer helpful

Correct concentration for treatment of Brown Patch Fungus in St. Augustine grass with Clearys 3336F?
You want to use 2-4 oz Clearys 3336F Fungicide per gallon water on St. Augustiner grass. Please let us know if you have any more questions.

Was this answer helpful to you?  YesNo

50 of 57 people found this answer helpful

See all 112 customer questions

3336F Fungicide 5 out of 5 stars Rating: 4.8 (61 Reviews / 112 Q&A)

From $75.53 + Free Shipping*