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MONTEREY

Monterey Liqui-Cop RTS Fungicide

Monterey Liqui-Cop RTS Fungicide is a powerful ready-to-spray fungicide that offers effective protection against a wide range of diseases for residential citrus, fruits, nuts, vegetables, and ornamentals.

As low as $33.36
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Monterey Liqui-Cop RTS Fungicide Product Page
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Price as of
04/21/26
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Monterey Liqui-Cop RTS Fungicide, manufactured by Monterey, is an easy-to-use copper-based fungicide that comes in a convenient built-in-hose end sprayer for effortless and even application on various residential plants.

The active ingredient copper 27.15% disrupts the fungal cell processes, effectively halting the spread of diseases such as brown rot, shot hole, and anthracnose. With its broad-spectrum efficacy, Monterey Liqui-Cop RTS Fungicide is a single solution for multiple plant types, reducing the need for multiple products.

Monterey Liqui-Cop RTS Fungicide is an excellent preventative fungicide that delivers great protection from crop-limiting plant diseases in citrus, fruits, nuts, vegetables, and ornamentals.

Tools Needed

You will need a garden hose to connect this product too.

How to Use

  • Step 1: Determine how much Monterey Liqui-Cop RTS Fungicide to use by measuring the square footage of the treatment area. Find the square footage by measuring the treatment area's length and width in feet, then multiplying them together (length X width = square footage). Fruits and Nuts: Mix specified rate in 1 gallon of water and apply 3 gallons of mixed solution to a small tree or bush, 6 gallons of mixed solution to a medium-size tree, or 9 gallons of mixed solution to a large tree. For small citrus trees, use 2-4 tsp. of Monterey Liqui-Cop RTS Fungicide in 1 gallon of water then apply 3 gallons of mixed solution. For vegetables: Mix specified rate in 1 gallon of water and apply 2 gallons of mixed solution per 1,000 sq. ft. (1 gallon of mixed solution per 500 sq. ft.). Miscellaneous: For herbs: Mix specified rate in 1 gallon of water and apply 2 gallons of mixed solution per 1,000 sq. ft. (1/2 gallon of mixed solution per 250 sq. ft.) For trees: Mix specified rate in 1 gallon of water and apply 3 gallons of mixed solution to a small tree, 6 gallons of mixed solution to a medium size tree, or 9 gallons of mixed solution to a large tree. To treat ornamentals use 2 teaspoons of product per gallon of water. Do not apply more than 460 tsp. of product per 1,000 sq. ft. per year for ornamentals. Refer to the product label for specific application rates and restrictions. 
  • Step 2: Connect the RTS bottle to a garden hose securely. Ensure the nozzle is set to the "OFF" position before turning on the water supply. Turn the nozzle to the "ON" position to begin spraying.
  • Step 3: Spray the affected plants evenly, covering all surfaces, including the undersides of leaves and stems.

Where to Use

Monterey Liqui-Cop RTS Fungicide can be used for outdoor residential fruits, nuts, vegetables, carambola, chives, dill, douglas fir, guava, litchi, live oak, macadamia, papaya, parsley, passion fruit, sugar apple, sycamore, and ornamentals.

When to Use

Apply before the disease is present on days when rainfall is not expected within the next 24 hours of application. 

Safety Information

Monterey Liqui-Cop RTS Fungicide is safe to use around children and pets when applied according to the product label instructions. Always wear the proper personal protective equipment (PPE) when handling and applying this product.

Do not allow adults, children, or pets to enter the treated area until sprays have dried. 

Special Considerations

This product may be reactive on metal and masonry surfaces such as galvanized roofing. Avoid contact with metal surfaces. Do not spray on cars, houses, lawn furniture, etc.

More Information
Restricted Use No
Shipping Restrictions ND
Availability Online
Signal Word CAUTION
Keith's Pro Tip "Ensure proper air circulation around plants by pruning dense foliage to help better prevent disease activity."
Time to Kill Monterey Liqui-Cop RTS Fungicide will control diseases within 7-14 days.
Chemical Type Fungicide
Formulation Ready-To-Use
Application Methods Broadcast Spray
Product Drawbacks Foliar injury may occur on copper sensitive varieties of plants.
Active Ingredient Copper 27.15%
Application Equipment Gloves
Mix Rate For small citrus trees, use 2-4 tsp. of Monterey Liqui-Cop RTS Fungicide in 1 gallon of water then apply 3 gallons of mixed solution. To treat ornamentals use 2 teaspoons of product per gallon of water.
Use Sites Outdoors
Yield 32 oz. of Monterey Liqui-Cop RTS Fungicide will cover 1,000 sq. ft. when used at the minimum rate of 190 tsp. per 1,000 sq. ft.
EPA Registration No. 54705-7
Shelf Life Monterey Liqui-Cop RTS Fungicide will last for 3 years when stored in a secure, locked area away from pets and out of the reach of children.
Comparable Products Liqui Cop Copper Fungicide, Liquid Copper Fungicide RTS.
Children or pets? No
Property Characteristics None
AvailabilityOnline
Restricted UseNo
BrandMONTEREY
Keith's Pro Tips"Ensure proper air circulation around plants by pruning dense foliage to help better prevent disease activity."
Product DrawbacksFoliar injury may occur on copper sensitive varieties of plants.
Target PestsAlternaria Late Blight, Anthracnose, Apple Scab, Bacterial Canker, Bacterial Fruit Blotch, Bacterial Speck, Bacterial spot, Ball Moss, Black Pitting, Blossom Blast, Botryosphaeria, Botrytis Blight, Brown Rot, Brown Rot Blossom Rot, Cane Canker, Cane Spot, Coryneum Blight, Deadbud, Downey Mildew, Early Blight, Eastern Filbert, Fire Blight, Foliage Blight, Greasy Spot, Gummy Stem, Kernel Rot, Late Blight, Leaf Curl, Leaf Spot, Leaf Spot Scorch, Melanose, Panicle, Peacock Spot, Pink Pitting, Pod Rot, Powdery Mildew, Purple Blotch, Red Algae, RhabdoclineNeedlecast, Rhizoctonia Solani, Scab, Septoria Leaf Blight, Shoot Blast, Shoot Blight, Shot Hole, Shuck Rot, Sigatoka, Walnut Blight, Yellow Rust, and Zonate Leaf Spot.
Application EquipmentGloves
Application MethodsBroadcast Spray
Active IngredientCopper 27.15%
Product TypeFungicide
FormulationReady-To-Use
Application RateFor small citrus trees, use 2-4 tsp. of Monterey Liqui-Cop RTS Fungicide in 1 gallon of water then apply 3 gallons of mixed solution. To treat ornamentals use 2 teaspoons of product per gallon of water.
Shelf LifeMonterey Liqui-Cop RTS Fungicide will last for 3 years when stored in a secure, locked area away from pets and out of the reach of children.
Yield32 oz. of Monterey Liqui-Cop RTS Fungicide will cover 1,000 sq. ft. when used at the minimum rate of 190 tsp. per 1,000 sq. ft.
Use SitesOutdoors
Time to KillMonterey Liqui-Cop RTS Fungicide will control diseases within 7-14 days.
Comparable ProductsLiqui Cop Copper Fungicide, Liquid Copper Fungicide RTS.
EPA Registration #54705-7

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