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HP2 is pure phosphorous from liquid seabird guano. Generations of gardening experience has been distilled it into a unique, easy-to-use formula for the hobbyist and professional gardener. HP2 is minimally processed to preserve all of the benefits and amazing synergistic qualities found in seabird guano and biogenic phosphate rock. HP2 is ideal during the bloom/fruiting stage.

Certified 100% Organic and GMO-Free.

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SKU: ROHPQ Categories: ,
100% Natural Seabird Guano / Biogenic Phosphate Rock




HP2 and HPK: Our two liquid guano boosters.


HP2 is pure phosphorous from liquid seabird guano. HPK is phosphorous from seabird guano supplemented with potassium from a mineral called langbeinite. We separated these two products because coco, which is often present in good potting soils, has a high cation exchange rate with potassium, meaning the plant takes it up quickly. You don’t want to overdo potassium in a coco heavy medium, hence our offering of pure HPK as a separate option.


HP2 liquid seabird guano and phosphate rock is a natural source of organic phosphorous, ideal for use during flowering and fruiting.



Soil or Hydroponics
Add 1 TBS (15 ml) per gallon. Use during fruiting or flowering.

Available In

1 Quart

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