Cease Biological Fungicide

Cease Biological Fungicide

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Product Overview

The Cease Biological Fungicide is an OMRI listed fungicide that effectively controls plant leaf diseases. It controls a wide range of both bacterial and fungal pathogens while providing protection to the plant and the environment. This can be applied as a soil drench and plant leaf or leaves spray on trees, shrubs, ornamentals, greenhouse crops, flowering plants and even on vegetables that grow under cover.

Cease is the most effective alternative compared to synthetic chemicals for the use against bacterial diseases and fungal pathogens. Having a four-hour restricted entry interval (REI), and a zero-day pre-harvest interval, it provides growers flexibility and labor costs savings. Cease is also a root bio-fungicide for the prevention, suppression, and control of soil diseases on many vegetables and ornamentals. Cease boosts germination and enhances plant growth by repressing diseases that are caused by Fusarium, Pythium, Rhizoctonia, and Phytophthora.

Features and Specs

Active Ingredient: QST 713 strain of bacillus subtilis 1.34%
Target pests: Pin rot Complex, Bacterial Leaf Spot, Rust, Downy Mildew, Powdery Mildew, Gray Mold, Bacterial Blight, Black Root Rot, Early Blight, etc.
* See label for complete list
For use in: For Use On: Ornamentals, Trees, Shrubs, Seedlings, Conifers and Greenhouse Vegetables
Use in: Field, Greenhouses, Glasshouses, Nurseries, Shade Houses, Interiorscapes, Seedling Production and Forest Seedling Production Sites
* See label for complete list
Application: Application Rates:
Agricultural Greenhouse: 3 - 6 qt. per 100 gallons per acre

Ornamentals, Trees, Shrubs, Flowering Plants: 2 - 8 qt. per 100 gallons per acre

* See label for complete application instructions
Pet safe: Yes, if used as directed on label
Formulation: Professional Product
Shelf Life: 3 years - store between 70F to 75F
Special Features: - Can be used on Organic Production
- OMRI Listed
- Only a 4-hour REI
- May be sprayed up to and on the day of harvest
Shipping Weight: 9.48 lbs
Manufacturer: Bio Works, Inc (Mfg. Number: 75100)
UPC: 852109003266
EPA Registration: 264-1155-68539


Cease Benefits:

  • Proven efficacy against BOTH fungal and bacterial pathogens
  • Excellent safety – only a 4-hour REI, and can be sprayed up to and on the day of harvest!
  • Leaves virtually NO residues on plant foliage or flowers
  • Performs as well as copper-based products, without phytotoxicity or residues
  • Controls disease using multi-site modes of action for effective resistance management
  • Safe for beneficial insects and bees
  • Compatible for tank-mixing / rotating with other registered products
  • OMRI Listed and NOP-approved for use in organic production
  • Excellent for sustainability and IPM programs

For Foliar Diseases:

Cease is an effective alternative to synthetic chemicals for fungal pathogens such as Botrytis gray mold and powdery mildews, and to coppers for bacterial diseases, such as Pseudomonas, Erwinia and Xanthomonas. With a 4-hour restricted entry interval and a 0-day pre-harvest interval, Cease provides growers flexibility and labor costs savings.

For Soil Diseases:

Cease is also a broad spectrum root bio-fungicide for the prevention, suppression and control of soil borne diseases on a wide range of ornamentals and vegetables. Cease enhances germination and plant growth by suppressing diseases caused by Rhizoctonia, Pythium, Fusarium and Phytophthora.

Diseases Controlled:

Cease controls common fungal diseases such as Botrytis, powdery mildew, Anthracnose and several leaf spot diseases such as Alternaria and Entomosporium. Cease also controls bacterial diseases such as Pseudomonas, Erwinia, and Xanthomonas spp., as well as soil diseases Rhizoctonia, Pythium, Fusarium and Phytophthora.

Mode of Action:

Based on a naturally occurring patented strain of Bacillus subtilis (strain QST 713), Cease contains a group of natural antifungal and antibacterial compounds with multiple modes of action to destroy pathogens. Cease is a valuable addition to any disease control program where resistance development is a concern.

Application Recommendations:

Cease can be applied in greenhouse, field, interiorscape, residential and commercial landscapes and shade house environments on a wide array of ornamentals including bedding plants, potted plants, cut flowers, tropical foliage and container grown trees, shrubs, and vegetables grown under cover. Cease is a fungicide and bactericide. Ideally, it should be used when conditions favor disease development, but before the onset of symptoms. It may also be used at the first sign of disease symptoms. Since Cease controls diseases through multiple modes of action, it is ideally suited for programs aiming to manage resistance. If employing chemical fungicides with a single site of action, it is best to break up the chemical cycle by rotating Cease into the program.

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Questions & Answers

Have a question about this product?
Does Cease Biological Fungicide work on turfgrass fungus?

Particularly interested in effectiveness against large brown patch disease on Zoysia grass


Cease Biological Fungicide is not labeled to be used on turfgrass. Clearys 3336F Fungicide would be a better option.

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How does Cease Biological Fungicide do on wine grapes?

Vineyard spray management


Cease Biological Fungicide is not labeled for use on grape vines so we cannot recommend it.  Companion Biological Fungicide would be an alternative that could be used.

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