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JH Biotech Fosphite by JH Biotech Inc
JH Biotech Inc
JH Biotech Fosphite

Fosphite is a systemic fungicide for controlling downy mildew, Phytophthora, and Pythium on crops.

Registered as a reduced risk pesticide by US EPA, Fosphite acts systemically for several weeks with a four-hour re-entry interval and a zero-day pre-harvest interval.

The active ingredients in Fosphite break down the metabolism and cell wall components of pathogens. Fosphite then goes on to slow pathogen growth and inhibit their sporulation. By reducing pathogenic growth rate this allows plant defense systems extra time to develop and kill invading organisms. Fosphite enables plants to recognize pathogens and quickly raise their own natural defenses against them.

Control various diseases on crops, ornamentals, and bedding plants with Fosphite safe and superior disease protection.

Form: Liquid Function: Systemic fungicide for controlling downy mildew, Phytophthora, and Pythium Compatibility: Compatible with most products; however, not compatible with copper products Shelf Life: Cool, shaded areas, up to 3 years


  • Boosts plant's natural immune response against pathogens
  • Provides slow release phosphorus and potassium
  • Helps increase yield
  • Improves quality and uniformity

Key Features

  • Works both as a foliar and soil applied fungicide
  • Excellent control of Pythium, Pytophthora, and downey mildew
  • Registered as a "Reduced Risk Pesticide" by the EPA
  • Kills fungi and is non-phytotoxic
  • Low application rate

Recommended Use:

Fosphite has low application rates, which translate into lower cost. Usually, one application a month is enough to control and prevent disease. Use Fosphite as a preventive control measure to keep your crops healthy all year long.

Fosphite may be applied by various application methods, including foliar sprays, soil drench, soil incorporation, bare root dip, and air application. For foliar sprays, apply Fosphite with sufficient water for adequate coverage of foliage, according to crop and growth stage.

Diseases & Pests Controlled
  • Fungus
  • Phytophthora
  • Downy Mildews
  • Pythium
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