Blossom Blaster

Blossom Blaster
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Grotek Blossom Blaster is a powerful blend of phosphorous and potassium fertilizers specially designed to increase the number and size of flower buds in cannabis plants. It's unique formula encourages the plant to direct it's energy into vigorous branching rather than vertical growth, leading to the developing of a much higher number of bud sites.

Formulated to provide cannabis plants with the correct balance of high quality nutrients to increase sugar starch and oil production during flowering, Grotek Blossom Blaster 20g also contains compounds that help the plant to cope with environmental stress, ensuring they are healthy during this accelerated development entering the bloom stage. It is suitable for use in all growing mediums and compatible with all base nutrients.

As Blossom Blaster is a highly concentrated supplement, it should only be applied twice during the first three weeks of the flowering period.


  • 39% Phosphorus
  • 25% Potassium


  • 0.1 g per 1l water. Use once when flowers first appear, then again two weeks later.
  • Do not add to existing nutrient solutions, always mix a fresh batch.
  • Not suitable for use as a foliar spray.

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