The questions we get asked most about Humic Acid — answered honestly.
Humic acid improves the soil's ability to hold and release nutrients. It does this primarily through chelation — it binds to mineral ions (iron, zinc, calcium, etc.) that are locked in the soil in unavailable forms and converts them into plant-available forms. It also increases the cation exchange capacity of soil, meaning the soil can hold more nutrients without them leaching away.
No. Humic acid contains very little direct nutrition. It is a soil conditioner — it makes the nutrients already in your soil more available. Think of it as a key that unlocks a door. The food (vermicompost, cow manure) still needs to be there. Humic acid just makes sure your plants can access it.
Yes. Very high concentrations of humic acid can actually reduce its effectiveness by overwhelming the chelation chemistry. Always use at the recommended rate. Consistent low-dose application over time produces far better results than occasional high-dose treatment.
Leonardite is a naturally occurring oxidised form of lignite — ancient plant material that has been decomposing for millions of years. It has the highest natural concentration of humic and fulvic acids of any material on earth. Humic acid derived from leonardite is more potent and consistent than humic acid from other sources like peat or compost.
Both are components of humus. Humic acid has larger molecules — it works primarily in the soil, improving structure and nutrient retention. Fulvic acid has smaller molecules — it penetrates plant cell walls more easily and is more effective for foliar applications. Prahas Humic Acid contains both fractions, with the balance optimised for soil application.
Completely. Humic acid is derived from natural organic matter and is certified safe for use in 100% Natural agriculture worldwide. It poses no food safety risk and can be used throughout the growing season right up to harvest.
Yes — humic acid is compatible with vermicompost applications, seaweed extract, and most 100% Natural inputs. Avoid mixing with strongly alkaline solutions which can reduce its effectiveness. For foliar use, dissolve humic acid first and check the pH is between 6.5–7.5 before adding other components.