3336F Fungicide Quart
3336F Fungicide – Systemic Lawn Disease Control
3336F Fungicide – Systemic Lawn Disease Control
3336F Fungicide – Systemic Lawn Disease Control
3336F Fungicide Quart
3336F Fungicide – Systemic Lawn Disease Control
gray leaf spot disease fungicide
3336F Fungicide – Systemic Lawn Disease Control
3336F Fungicide Quart
3336F Fungicide – Systemic Lawn Disease Control
3336F Fungicide – Systemic Lawn Disease Control
3336F Fungicide – Systemic Lawn Disease Control
3336F Fungicide Quart
3336F Fungicide – Systemic Lawn Disease Control
gray leaf spot disease fungicide
3336F Fungicide – Systemic Lawn Disease Control
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3336F Fungicide – Systemic Lawn Disease Control

Systemic liquid fungicide for brown patch, dollar spot, gray leaf spot, red thread, and other listed lawn diseases.
  • Controls active lawn disease
  • Helps protect new growth
  • Perferred gray leaf spot treatment
$75.99

Timing: Apply preventively during disease-prone weather or at the first sign of disease. Use spring, summer, fall, or winter based on disease pressure.

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Systemic Fungicide for Broad-Spectrum Lawn Disease Control

Professional-grade protection against brown patch, dollar spot, grey leaf spot, and more.

3336F Fungicide is a systemic, thiophanate-methyl fungicide designed to provide both preventive and curative control of major turfgrass diseases. Trusted by turf professionals and homeowners alike, it delivers reliable protection against foliar and soil-borne pathogens that threaten lawn health.

Its systemic action allows the product to move within the plant, treating existing infections while helping prevent future outbreaks.

Also available in granular form.

What It Controls

  • Brown Patch
  • Dollar Spot
  • Grey Leaf Spot
  • Leaf Spot
  • Red Thread
  • Fusarium Patch
  • Other labeled turf diseases

Why Choose 3336F

  • Systemic Action: Moves through plant tissue for internal disease control.
  • Preventive & Curative: Stops active infections and protects healthy turf.
  • Long-Lasting Protection: Extended residual activity compared to contact fungicides.
  • Versatile Application: Can be applied as a foliar spray or soil drench.
  • Professional Strength: Widely used in residential lawns, golf courses, and commercial turf.

How It Works

3336F contains thiophanate-methyl, a systemic fungicide in the FRAC Group 1 class. It interferes with fungal cell division, preventing disease progression and protecting healthy turf from new infections.

Application Guidelines

  • Apply at first sign of disease or preventively during high-pressure periods.
  • Use sufficient spray volume for uniform coverage.
  • For soil-borne diseases, lightly irrigate after application to move product into the root zone.
  • Follow labeled rates depending on disease and turf type.

Resistance Management

Do not make more than two consecutive applications before rotating to a fungicide with a different mode of action (FRAC group). Rotating chemistries reduces resistance risk and improves long-term effectiveness.

Best For

  • Cool-season lawns (Fescue, Bluegrass, Ryegrass)
  • Warm-season lawns (Bermuda, Zoysia, St. Augustine)
  • Preventive disease programs
  • Curative treatment of active fungal outbreaks

3336F Fungicide delivers reliable, systemic disease control to keep your lawn healthy, green, and protected throughout the growing season.

Key Value
Active Ingredient thiophanate-methyl (41.25%)
Lawn Types Tall fescue, Bermuda, Zoysia, St. augustine, Centipede, Kentucky bluegrass, Ryegrass
Special Features Broad-spectrum disease control
Application Rate

2-4 oz. per 1,000 sq.ft.

Time to Apply Spring, Summer, Fall, Winter
Target Pests (See product label for complete list) Anthracnose (basal, foliar) Cankers Diebacks Dollar spot Fusarium blight/patch Large brown patch Pink snow mold Powdery mildew Red thread Rusts Spring dead spot Stripe smut Summer patch Zoysia patch
Delivery System Liquid
Brand Nufarm
For Use In Turf Grass, Landscape Beds

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Got Questions?

Frequently Asked?

What does 3336 F prevent and control?

3336 F helps prevent and control many turf and ornamental diseases, including Brown Patch, Dollar Spot, Leaf Spot, Gray Leaf Spot, Red Thread, Rust, Snow Mold, Spring Dead Spot, and Take-All Patch when used according to the label.

Is 3336 F preventive or curative?

3336 F has both preventive and curative activity. For best results, apply before disease becomes severe or when symptoms first appear.

What is the active ingredient in 3336 F?

The active ingredient in 3336 F is thiophanate-methyl, a Group 1 systemic fungicide.

Does 3336 F control Dollar Spot?

Yes. Dollar Spot is listed on the 3336 F turf disease control table. Apply when disease first appears and continue according to the label directions.

Does 3336 F control Pythium Blight?

No. Pythium Blight is not a disease I would match to 3336 F based on this label. Use a fungicide specifically labeled for Pythium Blight.

Can 3336 F be used on ornamental plants?

Yes. The label includes use on annual and perennial flowers, bedding plants, foliage plants, ground covers, deciduous and evergreen trees and shrubs, and conifer nurseries. Always confirm the plant and disease are listed and follow the ornamental-use directions.

Why should 3336 F be rotated with other fungicides?

3336 F is a Group 1 fungicide. Repeated use of the same fungicide group can increase the risk of disease resistance, so the label recommends rotating or tank mixing with fungicides from different groups.

Should 3336 F be watered in after application?

For root diseases, the label recommends lightly watering the treated area to move the fungicide into the active root zone. For foliar diseases, allow the spray to dry on the leaf surface before normal watering.