COVID-19 Info: We would like to inform our customers and partners that we are making every effort to ensure the continuity of our services during this time. We applied contingency plans to our production facilities, and — to date — our production is running under strict safety measures to protect the health of our staff. We will keep our customers informed as the situation evolves.

Find your product

Lallemand Plant Care is committed to research and delivering effective solutions. Progress is part of our culture.

Lallemand invests thousands of hours in laboratory and field research with more than 400 scientists worldwide. Our commitment is to innovate and deliver agile solutions to growers as the industry shifts.

When you purchase a Lallemand product you are buying much more than high performance biologicals, you are receiving science backed products. Our global team, day after day, is dedicated to solving grower challenges and improving yield and crop quality.


Prestop® is a biological fungicide used in the production of vegetables, fruits, herbs, and ornamentals. It is a naturally occurring soil fungus that contains mycelium and spores of the Gliocladium catenulatum strain J1446 that controls a range of crop diseases. Prestop® Provides Effective Control on a Wide Range of Pathogens Which Include:

  • Grey mold and stem canker caused by Botrytis cinerea on a large variety of fruit and vegetables including, but not limited to, tomatoes, peppers, cucumber, lettuce, herbs and ornamental plants
  • Gummy stem blight (Didymella bryoniae) on cucurbits such as cucumbers and melons
  • Damping-off and root diseases caused by Pythium, Fusarium and Rhizoctonia solani on a large range of vegetables, herbs and ornamentals
  • Crown rot caused by Phytophthora on a variety of fruits, vegetables and ornamentals



Developed from a naturally occurring bacteria, Streptomyces griseoviridis, Mycostop is a preventative product that thrives in the rhizosphere for several weeks. When applied as a drench or spray, the dried spores and mycelium of the Streptomyces culture in Mycostop germinate and begin to grow on and around the plant root system. This creates a biological defense against seed and soil-borne pathogens. Mycostop Provides Effective Control on a Wide Range of Pathogens Which Include: • Damping-off caused by various fungi, such as Rhizoctonia solani • Wilt and root diseases caused by Fusarium, Phytophthora and Pythium


Active Ingredient:

  • 5 x 108 Streptomyces sp. strain K61

Formulation Type:

  • Wettable powder

Package Size:

  • 5g
  • 25g
  • 100g


  • Effective against a wide range of seed and soil-borne pathogens
  • Compatible with most chemical pesticides for use in an Integrated Pest Management program
  • OMRI-Listed
  • Growth promotion
  • No residues on edible crops
  • Effective in organic and inorganic growing mediums

About Lallemand

Lallemand develops, manufactures and markets high-value yeast, bacteria and fungi products for the plant care market. We specialize in rhizosphere inoculants, foliar biostimulants and biopesticides. Using sound science and empirical know-how, Lallemand selects the right strains for the right applications to have the greatest impact for our partners and customers.

Lallemand has become an active proponent of biological plant care solutions by developing, producing and marketing fungal, bacterial and yeast biocontrol products, biofertilizers and biostimulants for application in forestry, agriculture, horticulture, turf management and consumer gardening.

Lallemand Plant Care specializes in supplying biological plant protection, biostimulation and biofertilization products that improve productivity and plant vitality, without undesired pesticide residues into the environment. Biological plant protection utilizes nature’s own methods for the prevention of plant diseases and pests. Pathogens are controlled by their natural enemies – microbes isolated from nature. Biostimulation is another method used to improve plant resistance to disease and stress and to stimulate natural processes to improve yield and crop quality.

To learn more about Lallemand Inc. visit or to learn more about the business unit, Lallemand Plant Care visit

Our Team

Michael Pratt
Commercial Director of Specialty Agriculture, NA
Mobile: 705-942-5824

Matthew Krause, PhD
Technical Lead – Covered Crops
Mobile: 585-643-9229

Vince Myerly
Commercial Director, NA
Mobile: 585-230-6301

Have questions?
We’d love to hear from you.
Get in touch!
tf. 1-844-590-7781
Get in touch