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SoilGard Microbial Fungicide

An easy-to-use granular formulation that contains a living, naturally occurring soil fungus,Trichoderma virens, that controls soil-borne diseases caused by Pythium, Rhizoctonia and Fusarium.

SoilGard hero image

SoilGard is for use against the following diseases:

  • Pythium
  • Rhizoctonia
  • Fusarium
  • Root rots

SoilGard can be used with the following crops:

Field Crops (Agricultural crops, including melons—watermelons, cantaloupes, honeydew, spinach, lettuces, etc.)

SoilGard Applications

Active Ingredient: Trichoderma virens (formerly called Gliocladium virens)

Rates: 1 to 1.5 lbs. per cubic yard of soil (see label)

Re-entry Interval: 0 hours

Days to Harvest: Not Applicable


T. virens, the active ingredient in SoilGard is a naturally occurring soil fungus which is antagonistic to plant pathogenic fungi such as Pythium and Rhizoctonia, thereby aiding in control of these damping off and root rot pathogens. SoilGard acts as a preventative and will protect non infected plants. It may not, however, cure already infected plants. Where possible allow the treated soil or media to incubate for 1 day prior to planting to achieve the best results. Do not use other soil fungicides at the time of incorporation. Later addition of fungicides is acceptable but usually unnecessary.

For best results store in a cool dry place (preferably refrigerated).

Organic Crops

NOP Approved:

This product is approved for organic production by the National Organic Program (NOP), a marketing program housed within the United States Department of Agriculture (USDA) Agricultural Marketing Service, the agency that sets marketing standards. The NOP mission is to develop and implement national standards that govern the marketing of agricultural products as organically produced, to facilitate commerce in fresh and processed food that is organically produced, and to assure consumers that such products meet consistent standards.

OMRI Listed®:

This product is OMRI Listed, therefore it is determined by the Organic Materials Review Institute (OMRI) to be suitable for use in certified organic production.

OMRI Certificate Printer friendly PDF format