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Lesco Spectator Ultra Fungicide

Broad-Spectrum Disease Control for Turf and Ornamentals

Prevents and controls many common lawn and ornamental diseases, including Brown Patch, Dollar Spot, Gray Leaf Spot, Leaf Spot, Rust, Red Thread, Snow Mold, Spring Dead Spot, Take-All Patch, and Zoysia Patch.

Flexible turf and ornamental use
Systemic Group 3 fungicide
Prevents and controls common lawn diseases

$119.99

Timing: Apply preventively when disease conditions are favorable or early when symptoms first appear. Repeat every 14–28 days for many foliar turf diseases, depending on the disease, rate, and pressure.

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LESCO® Spectator Ultra Fungicide is a professional-grade, systemic fungicide that provides preventative and curative control of major turfgrass and ornamental diseases. Powered by 14.3% propiconazole, Spectator Ultra targets pathogens from the inside out and delivers reliable protection against dollar spot, brown patch, anthracnose, and more.

Why Choose LESCO Spectator Ultra?

Systemic Protection: Absorbed by the plant and translocated for long-lasting disease suppression.
Broad-Spectrum Control: Effective against over 20 major turf and ornamental diseases.
Flexible Application: Can be tank-mixed with contact fungicides, herbicides, or insecticides.
Improves Establishment: Encourages faster rooting and establishment for new turf or sod.

How to Use

Application Rate for Lawns: 1–2 fl oz per 1,000 sq ft (up to 16 fl oz/year per 1,000 sq ft)
Best Practices: Apply preventatively every 14–28 days when conditions favor disease
Water-In Instructions: Allow to dry for foliar diseases; water in for soilborne pathogens
For Ornamentals: Use 2–24 fl oz per 100 gallons of water depending on disease severity

Common Diseases Controlled

Brown Patch
Dollar Spot
Anthracnose
Rust, Powdery Mildew
Snow Mold, Red Thread, Leaf Spot
Spring Dead Spot, Take-All Patch

Active Ingredient

Propiconazole 14.3%

Important Notes

Not for use in greenhouses or tree injection
Do not graze animals or feed clippings from treated areas
Do not exceed 5.4 gallons per acre per year

Details

Key	Value
Active Ingredient	Propiconazole 14.3%
Lawn Types	Tall fescue, Bermuda, Zoysia, St. augustine, Centipede, Kentucky bluegrass, Ryegrass
Application Rate	1-2 oz. per 1,000 sqft. every 14-28 days. (See Product Label)
Time to Apply	Spring, Summer, Fall
Target Pests	Brown Patch Dollar Spot Anthracnose Rust, Powdery Mildew Snow Mold, Red Thread, Leaf Spot Spring Dead Spot, Take-All Patch
Delivery System	Liquid
Brand	Lesco
For Use In	Turf Grass, Landscape Beds

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Got Questions?

Frequently Asked?

What diseases does Spectator Ultra control?

It controls dollar spot, brown patch, anthracnose, rust, powdery mildew, leaf spot, snow mold, red thread, and many more.

How much should I apply to my lawn?

Apply 1–2 fl oz per 1,000 sq ft depending on disease pressure and timing. Never exceed 16 fl oz per 1,000 sq ft per year.

Can it be used on all grass types?

Yes, but Bermudagrass may be sensitive. Do not apply more than 4 fl oz per 1,000 sq ft every 30 days to Bermudagrass. Avoid application over 90°F on Bermuda greens.

Is this a curative or preventative fungicide?

It works best as a preventative fungicide but also has curative properties when applied early in the infection cycle.

Can I tank-mix this with other products?

Yes. It can be tank-mixed with compatible fungicides (e.g., chlorothalonil), herbicides, and insecticides. Always perform a jar test for compatibility.

Can I use this on ornamental plants?

For ornamental disease control, the label lists rates from 2–24 fl oz per 100 gallons of water, depending on the plant and disease. For general disease control in landscapes, the label gives 6–8 fl oz per 100 gallons of water every 21 days, beginning before disease development for best control.

What is the active ingredient in LESCO Spectator Ultra?

The active ingredient is propiconazole at 14.3%. It is a Group 3 DMI systemic fungicide.

Does LESCO Spectator Ultra control Brown Patch?

Yes. The label lists Brown Patch at 1–2 fl oz per 1,000 sq ft on a 14–21 day interval, beginning in May or June before disease is present.

Does LESCO Spectator Ultra control Pythium Blight?

No, I would not use Spectator Ultra as a standalone Pythium Blight recommendation. The label references using or tank mixing with a Pythium-control fungicide when Pythium Blight conditions are favorable.