Roots Organics HP2 | 1gal - (Case of 4)

Liquid Guano Phosphorus for Flowering and Fruiting, 1gal

Phosphorus demand rises sharply once a plant shifts into flowering and fruiting, and a synthetic phosphate salt doesn't always deliver that nutrient in the form growers who prefer a natural input are looking for. Roots Organics HP2 distills seabird guano and biogenic phosphate rock into a liquid concentrate, keeping processing minimal so the compounds naturally present in those materials stay intact.

This 1gal container ships as a case of 4, giving regular indoor growers enough on hand to carry a feeding program through the flowering and fruiting window without running out mid-cycle.

Key Features & Benefits

• Liquid seabird guano source — delivers phosphorus from seabird guano and biogenic phosphate rock rather than a synthetic phosphate salt.
• Minimally processed — kept close to its raw state to preserve the synergistic compounds naturally present in guano and phosphate rock.
• Timed for flowering and fruiting — formulated for the stages where phosphorus demand rises, rather than as a season-long feed.
• Easy-to-use liquid format — mixes into a reservoir or feeding solution without the handling steps a raw guano powder needs.

Who Should Use HP2

This fits growers already running a base nutrient program who want a natural, guano-sourced phosphorus boost specifically timed to flowering and fruiting.

About Roots Organics

HP2 is one of several stage-specific liquid nutrients Aurora Innovations, Inc. formulates under its Roots Organics line in Eugene, Oregon, built from seabird guano rather than a mined or synthetic phosphate source.

Frequently Asked Questions

What is HP2 made from?

HP2 is a liquid extract of seabird guano and biogenic phosphate rock, both natural sources of plant-available phosphorus. It is distilled into a liquid so growers don't have to handle or dissolve raw guano powder.

When should I start using HP2?

Apply it during the flowering and fruiting stages, when phosphorus demand rises as the plant shifts energy toward bud and fruit development. It is not intended as a season-long base nutrient.

How minimally processed is HP2?

HP2 is kept close to its raw guano and phosphate rock state specifically to preserve the naturally occurring compounds those materials carry. Heavier processing methods tend to strip out some of that synergistic material.

Do I still need my regular base nutrients?

Yes, HP2 is meant to layer onto an existing feeding program rather than replace it. Think of it as a phosphorus-focused supplement for the flowering window, not a complete nutrient line on its own.

Is HP2 suited to both hobby and commercial growers?

Yes, the liquid format is straightforward enough for a hobbyist adding it to a small reservoir. The case-packed 1gal option also suits a commercial operation feeding more plants, while the 32oz size fits a smaller garden.