Blossom Protect

Horticulture Biological Fungicide

Blossom Protect is a biological fungicide that fits well in a fire blight protection plan in pome fruit.

Technical Information

Chemical class: N/A – Biological
Active ingredient:  Aureobasidium pullulans
Packaging:  12 kg box: Blossom Protect (1.5 kg canister) + Buffer Protect (10.5 kg bag)
Rainfast:  Avoid application when heavy rainfall is in the forecast
PCP #:  30552

Registered Crops

  • Pome fruit


  • Approved for organic production
  • Effective protection against fire blight on pome fruit
  • Unique mode of action
  • Reduces the amount of resistant pathogens in the population
  • No PHI
  • Safe for humans and environment (not harmful to non-target organisms)

Biological fungicide for organic production logo

General Usage Information

  • Agitate tank solution during application and use within 3 hours
  • Apply Blossom Protect the day before predicted infection conditions. Further applications after 2 days if infection risk is still high and new blossoms open.
  • To be mixed with Buffer Protect<sup>™</sup> (“Component A”), a citric acid buffer supplied together with Blossom Protect against fire blight. Use 1.5 kg Blossom Protect together with 10.5 kg Buffer Protect for trees of 2 m canopy height.
  • Adjust the amount of product depending on the canopy height
  • Reduce number of applications to 2 in case of varieties sensitive for russeting
  • Tank mixtures possible with: wettable sulphur, fluopyram, anilinopyrimidines and some DMI, other fungicides have to be applied separately from treatments with Blossom Protect the day before or 2 days after the application of Blossom Protect. Exception: lime sulfur can be applied 6 hours after Blossom Protect. Contact your Nufarm Horticulture Specialist for more information on tank-mix partners.
  • Maximum storage period of 18 months at room temperature (20°C) or 30 months at cool storage (8°C) from the manufacturing date

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