10 Best Organic Humic Acid of 2025

Tested and Reviewed: Top 10 Organic Humic Acid deals with expert ratings from 8.1 to a perfect 10

March 2026 Edition

Editor's Choice

9.7

GS Plant Foods

GS Plant Foods Humic Acid Soil Amendment – Leonardite-Derived Liquid Concentrate for Improved Soil Structure & Nutrient Availability – OMRI Listed for Organic Use – 1 Gallon

Editor's bottom line:

“This organic humic acid is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

IMPROVES SOIL STRUCTURE & NUTRIENT AVAILABILITY- GS Plant Foods Humic Acid Soil Amendment supports healthy soil by enhancing cation exchange capacity and helping the root zone access existing nutrients in the soil more efficiently. Derived from high-quality Leonardite.
OMRI LISTED FOR ORGANIC USE- This product is OMRI Listed under the name GS Plant Foods Organic Liquid Humic Acid, making it suitable for use in certified organic growing programs and regenerative soil practices.
DERIVED FROM PURE LEONARDITE- Our liquid humic acid is sourced from premium Leonardite deposits, providing a rich supply of naturally occurring organic matter that contributes to long-term soil health and conditioning.
SUPPORTS A HEALTHIER ROOT ZONE- Humic substances help create a more balanced soil environment by improving nutrient exchange, buffering soil conditions, and supporting strong root-zone developmentwithout synthetic additives or harsh ingredients.
COMPATIBLE WITH MOST FERTILIZER & SOIL PROGRAMS Use with your existing fertilization schedule. Works well for gardens, houseplants, lawns, trees, greenhouse crops, vegetables, and landscape plants. Avoid mixing with low-pH or high-calcium formulations.

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Picked by 397 people today

9.5

The Andersons

The Andersons Humic DG Organic Soil Amendment - Covers up to 10,000 sq ft (11 lb)

Main Highlights

Carbon soil amendment increases soil carbon and soil organic matter
Highly concentrated 70% humic content (A&L method). Feeds beneficial soil microbes by providing a key food source, carbon. Chelates nutrients to increase nutrient and fertilizer efficiency; increases nutrient absorption
Improves seed germination, root mass, root vigor and overall root and plant health. Environmentally friendly, OMRI listed
User friendly; can be blended with fertilizers, alongside any fertilizer program or used alone. Highest quality of humate source
Safe for all turf and soil types. Not for sale in SD

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9.5

GS Plant Foods

GS Plant Foods Humic Acid Soil Amendment – Leonardite-Derived Liquid Concentrate for Improved Soil Structure & Nutrient Availability – OMRI Listed for Organic Use – 32 Oz

Main Highlights

IMPROVES SOIL STRUCTURE & NUTRIENT AVAILABILITY- GS Plant Foods Humic Acid Soil Amendment supports healthy soil by enhancing cation exchange capacity and helping the root zone access existing nutrients in the soil more efficiently. Derived from high-quality Leonardite.
OMRI LISTED FOR ORGANIC USE- This product is OMRI Listed under the name GS Plant Foods Organic Liquid Humic Acid, making it suitable for use in certified organic growing programs and regenerative soil practices.
DERIVED FROM PURE LEONARDITE- Our liquid humic acid is sourced from premium Leonardite deposits, providing a rich supply of naturally occurring organic matter that contributes to long-term soil health and conditioning.
SUPPORTS A HEALTHIER ROOT ZONE- Humic substances help create a more balanced soil environment by improving nutrient exchange, buffering soil conditions, and supporting strong root-zone developmentwithout synthetic additives or harsh ingredients.
COMPATIBLE WITH MOST FERTILIZER & SOIL PROGRAMS Use with your existing fertilization schedule. Works well for gardens, houseplants, lawns, trees, greenhouse crops, vegetables, and landscape plants. Avoid mixing with low-pH or high-calcium formulations.

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9.2

Wallace Organic Wonder

Wallace Organic Wonder, Soluble DS-80 Humic/Fulvic Acid (1lb)

Main Highlights

Minimum 93% humic and fulvic acids content
Use as a dry or liquid application, Completely water soluble When mixed with water, this highly compatible humic acid powder results in an organic solution that is compatible with many liquid fertilizers and micro nutrients.
Great for fertigation or seed treatment. Highly concentrated humic (content)
Adds organic matter, Enhances nutrient uptake and availability
Feeds soil microbes. is an organic, dry soluble humic acid powder. With 100% soluble humic acids, Is an efficient way to produce small or large batches of humic acid liquid.

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9.0

Down To Earth All Natural Fertilizers

Down To Earth All Natural Fertilizers Organic Granular Humic Acids - Soil Amendment Adds Carbon, Increases Nutrient Uptake, 5 lb

Main Highlights

Down to Earth Granular Humic Acids is a five pound box of all natural fertilizer and is listed by the Organic Materials Review Institute (OMRI) for use in organic production
A highly concentrated source of humic acids ideal for use on fields, turf, vegetable gardens and may potentially increase a plant's ability to take up micronutrients from the soil
Carefully mined from one of the worlds richest deposits and is derived from the ancient remains of decomposed organic plant materials
Humic acids enhance nutrient uptake and stimulate soil microbial life and is a great way to introduce long-term, stable organic matter to your garden
Naturally occurring, unaltered oxidized lignite containing 50% total humic acids, crushed, screened and graded to a particle size of 1-3mm

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8.8

The Andersons

The Andersons HumiChar Organic Soil Amendment with Humic Acid and Biochar Covers 12,000 sq ft (12 lb)

Main Highlights

Improves soil health, lawn health, plant health, and reduce the use of fertilizers
Easy to apply spherical, uniform, low dust formulation. Dispersible Granule, or "DG" Technology is The Andersons' patented nutrient delivery system. With DG Technology, particles are more rapidly and efficiently broken down
Environmentally friendly, OMRI listed. User friendly; can be blended with fertilizers, alongside any fertilizer program or used alone
HumiChar is an organic, carbon-based soil amendment. Contains 30% high-quality humic acid and 43% granulated biochar
Provides the benefit of quickly-available humic acid and the long-term soil building qualities of the biochar that lasts for decades. Not for sale in CA or OR

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8.6

Triquetra Health

Flora Fulvic | Fulvic Acid + Humic Acid Complex – 550 mg | Mined in Utah, Prehistoric Deep Earth Extract | Immunity, Gut, Digestion – Natural Trace Mineral Complex, Fulvic Acid Supplement – 8 fl oz.

Main Highlights

FULVIC ACID + HUMIC ACID TRACE MINERAL COMPLEX | Flora Fulvic is a powerhouse superfood blend of the purest and most potent Fulvic Acid, Humic Acid and naturally occurring Trace Mineral Complex.
HEALTH BENEFITS | Flora Fulvic was formulated to support gut health and function, natural detoxification processes, energy & vitality, cellular health, mental function and overall hydration*
MINED FROM PREHISTORIC DEEP-EARTH DEPOSITS | The Flora Fulvic formula began over 100,000 years ago. Our Fulvic and Humic Acids are mined from prehistoric mines in Utah that are more than 10,000 feet below the surface. These ancient deposits are formed over thousands of years and provide the most mineral rich natural deposits in the world; making for the most-nutrient dense mineral complex.
MORE POTENT THAN SHILAJIT | The primary active nutrient in Shilajit is Fulvic Acid. On average Shilajit contains 15% to 20% Fulvic Acid. The Flora Fulvic formula contains 75% Fulvic Acid concentration; each capsule delivers over 500 mg of Fulvic Acid per serving.
Natural, Clean, & Pure: Proudly vegan, gluten-free, soy-free, and dairy-free, with no artificial fillers or additives. All ingredients are 3rd party lab tested. Manufactured in a GMP-certified facility in the USA for the highest quality assurance.

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8.3

BioAg

BioAg TM7 Organic Humic Acid Soil Conditioner Plus Essential Micronutrients, Dry Amendment for All Plants, S B Co Cu Fe Mn Mo Zn (100 Grams)

Main Highlights

INCREDIBLE FOR SOIL HEALTH AND VIGOROUS GROWTH - When used regularly in the soil, TM-7 increases fruit set and production quality, stimulates soil microbial activity, improves soil tilth, increases trace element levels, and reduces water use.
BALANCED MICRONUTRIENTS IDEAL FOR PLANTS - Bioags proprietary process provides humic chelated micronutrients in ideal application ratio. 40% Humic Acid plus readily available Sulfur, Boron, Cobalt, Copper, Iron, Manganese, Molybdenum, Zinc.
EASILY APPLY AS DRY GRANULAR OR MAKE COMPOST TEAS - Dry broadcast for turf and farms, or add to liquid for foliar, hydroponic, irrigation, and hand watered applications. Fantastic for compost tea activation. Commercial use or home garden.
TRUST BIOAGS QUALITY ASSURANCE - To ensure top performance, every production run of TM7 is tested with HPTA approved test method. Made in the USA.
USE FOR ALL YOUR PLANTS AND LAWN - Use on hemp, turf grasses, tomato plants, vegetables, fruit, berries, and more. Enhances seed germination and soil conditioning. Protects plants against sub-optimal nutrients, light and temperature stresses.

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8.1

PowerGrow Systems

Humic Acids - Humic Acid Fertilizer & Conditioner (HUMIC Acid 5 LB Bag)

Main Highlights

Humic Acids increase plant nutrient uptake
Humic Acids increase soil microbial activity
Humic Acids increase soil health and help seed germination
Humic Acids increase water retention and oxgen in soil
Premium Humic Acids screened to the perfect size for gardens

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Best Value

8.1

Save 9%

Farmer's Secret

Farmer’s Secret Soil Revitalizer (32oz) - Organic (OMRI Listed) Beneficial Dirt Booster - Activated Humic Acid - Liquid Compost Soil Amendment

9% Off

Main Highlights

Feed the soil not the plants - stimulate microbial activity in your soil and boost probability of success with all types of plants like composting but faster
For best results, apply monthly throughout the growing season
No synthetic chemicals - main ingredient in this product is activated humics derived from organic sources (OMRI certified organic)
Concentrated formula - simply dilute at a ratio of 1 oz to 1 gallon and spray/pour on your soil
Farmers Secret products are made with pride in Kentucky and puts the know-how of award-winning farmers into your hands. Get in on the Secret!

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Our Best Overall Choice

Best Choice

9.7

GS Plant Foods

GS Plant Foods Humic Acid Soil Amendment – Leonardite-Derived Liquid Concentrate for Improved Soil Structure & Nutrient Availability – OMRI Listed for Organic Use – 1 Gallon

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

IMPROVES SOIL STRUCTURE & NUTRIENT AVAILABILITY- GS Plant Foods Humic Acid Soil Amendment supports healthy soil by enhancing cation exchange capacity and helping the root zone access existing nutrients in the soil more efficiently. Derived from high-quality Leonardite.
OMRI LISTED FOR ORGANIC USE- This product is OMRI Listed under the name GS Plant Foods Organic Liquid Humic Acid, making it suitable for use in certified organic growing programs and regenerative soil practices.
DERIVED FROM PURE LEONARDITE- Our liquid humic acid is sourced from premium Leonardite deposits, providing a rich supply of naturally occurring organic matter that contributes to long-term soil health and conditioning.
SUPPORTS A HEALTHIER ROOT ZONE- Humic substances help create a more balanced soil environment by improving nutrient exchange, buffering soil conditions, and supporting strong root-zone developmentwithout synthetic additives or harsh ingredients.
COMPATIBLE WITH MOST FERTILIZER & SOIL PROGRAMS Use with your existing fertilization schedule. Works well for gardens, houseplants, lawns, trees, greenhouse crops, vegetables, and landscape plants. Avoid mixing with low-pH or high-calcium formulations.

Show Price

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