Down to Earth Granular Humic Acids | 50lb - OMRI Listed

Concentrated Humic and Fulvic Acid Soil Amendment, 50lb

Even a well-fed soil can leave nutrients locked up in a form roots can't easily take up, especially in soils that have been heavily cropped or chemically farmed for years. Down to Earth Granular Humic Acids is refined from oxidized lignite into a concentrate carrying 70% total humic and fulvic acids, crushed and screened to a 1-3 mm granule that growers work into soil to improve nutrient uptake and support microbial life rather than add NPK directly.

This 50lb size suits growers treating a larger area of heavily cropped or depleted soil in one application cycle.

Key Features & Benefits

• 70% humic and fulvic acid concentration — delivers a high-concentration source refined from oxidized lignite rather than a diluted byproduct.
• OMRI Listed — certified for organic use as a soil-biology amendment rather than a direct nutrient source.
• 1-3 mm graded granule — crushed and screened to a consistent particle size for even soil incorporation.
• Nutrient uptake and microbial support — works to improve how efficiently existing soil nutrients get taken up and to stimulate microbial life.

Who Should Use This

Growers working with heavily cropped or chemically farmed soils, where nutrients may be present but not easily available to roots, are the right fit for Granular Humic Acids as a soil-biology-focused amendment.

About Down To Earth

Down To Earth offers concentrated mineral-derived amendments like Granular Humic Acids alongside its blended fertilizers, part of a catalog the company has built from natural ingredient sources since 1977 in Eugene, Oregon.

Frequently Asked Questions

What are humic and fulvic acids, and what do they do in soil?

They're organic compounds derived from decomposed plant and mineral matter, in this case sourced from oxidized lignite, that help improve how efficiently roots take up existing soil nutrients and support microbial activity. They aren't a direct NPK source themselves, which is why this product is used alongside a fertilizer rather than in place of one.

How concentrated is this humic acid product?

It's refined to a 70% total humic and fulvic acid concentration, crushed and screened to a 1-3 mm granule size for even incorporation into soil. That's a notably concentrated source compared with lower-grade humic products on the market.

Is Granular Humic Acids OMRI Listed?

Yes, this humic acid concentrate is OMRI Listed for certified organic use. Match the listing on your package against your certifier's current requirements before working it into certified acreage.

How is this product typically worked into a soil program?

It's mixed into soil to improve nutrient uptake and stimulate microbial life, typically alongside a regular fertilizer program rather than as a standalone feed. Follow current label directions for application rates by soil condition and crop.