Liquid Humic Acid for Plants Soil Amendment
Liquid Humic Acid for Plants Application Rates

Liquid Humic Acid for Plants | Rocky Mountain BioAg® – Natural Soil Enhancer

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Liquid Humic Acid for Plants – Natural Soil Enhancer for Healthier, Thriving Growth

Achieve lush, resilient plants with Liquid Humic Acid from Rocky Mountain BioAg®—a natural, nutrient-boosting soil enhancer perfect for DIY gardeners, home growers, and small farms. Sourced from ancient leonardite deposits in New Mexico, this humic acid formula strengthens soil structure, enhances nutrient uptake, and supports plants through environmental stressors, creating a thriving ecosystem for robust plant health.

Best For: Turf managers, natural growers, hydroponic operators, home gardeners, and row crop producers seeking a science-backed, natural soil amendment.

Why Choose Liquid Humic Acid for Plants?

Ideal for plants exposed to acidic water, Liquid Humic Acid is water-soluble in low pH conditions, making nutrients more accessible to plants. Acting as a powerful natural chelator, this formula releases essential nutrients into the soil, boosting water retention, aeration, and microbial activity—factors essential for vigorous plant growth.

With an easy-to-apply liquid formula, Liquid Humic Acid supports stronger roots, improved nutrient absorption, and vibrant, sustainable growth in your garden or farm.

Key Benefits:

  • Enhanced Water Retention: Improves soil’s ability to hold moisture, reducing watering frequency.
  • Stress Resistance: Strengthens plants to withstand environmental challenges.
  • 100% Natural: Derived from pure, ancient leonardite deposits in New Mexico for unmatched quality.
  • Easy Application: Liquid formula integrates seamlessly into any gardening or farming routine.
  • Microbial Stimulant: Promotes beneficial soil biology for long-term soil health.

Application Rates:

  • Container Plants: 20–30 mL/gal
  • Garden & Compost Tea: 10–30 mL/gal
  • Hydroponics: 10–30 mL/gal
  • Foliar Sprays: 15–20 mL/gal
  • Seed Activation: Soak seeds for 24 hours at 35 mL/gal
  • Cuttings/Clones: Spray unrooted clones with 20 mL/gal every 2 days; water rooted plants with 30 mL/gal
  • Acreage: 1–3 gallons per acre as a foliar spray, 2–3 times per growing season

Note: Cannot ship to California.

Rocky Mountain BioAg® Liquid Humic Acid delivers proven, science-driven results for stronger roots, nutrient-rich soil, and sustainable plant growth across turf, ornamentals, and field crops.


Frequently Asked Questions

Q: What is liquid humic acid and what does it do for plants?
A: Liquid humic acid is a natural soil amendment derived from leonardite, an ancient organic deposit. It acts as a chelator, binding essential nutrients and making them more bioavailable to plant roots. It also improves soil water retention, stimulates beneficial microbial activity, and enhances aeration.

Q: What is leonardite and why does it matter?
A: Leonardite is a soft, oxidized form of lignite coal rich in humic substances. Rocky Mountain BioAg® sources its humic acid from leonardite deposits in New Mexico, which are known for high humate concentration and purity.

Q: Is this product safe for organic growing?
A: Rocky Mountain BioAg® Liquid Humic Acid is derived from 100% natural leonardite with no synthetic additives. It is suitable for use in natural growing programs.

Q: Can I use liquid humic acid in hydroponics?
A: Yes. Apply at 10–30 mL per gallon of nutrient solution. It is water-soluble in low pH conditions, making it compatible with most hydroponic systems.

Q: What are the application rates for garden and field use?
A: Container plants: 20–30 mL/gal. Garden/compost tea: 10–30 mL/gal. Foliar spray: 15–20 mL/gal. Acreage: 1–3 gal/acre, 2–3 times per season.

Q: Can this product ship to California?
A: No. This product cannot be shipped to California.

Q: What sizes are available?
A: Available in 32 oz, 2.5 gallon, and 5 gallon (2 × 2.5 gal case) sizes.

Q: How does humic acid differ from fulvic acid?
A: Humic acid molecules are larger and work primarily in the soil to improve structure, water retention, and microbial activity. Fulvic acid is smaller, penetrates plant tissue more readily, and is more effective as a foliar application. Both are derived from leonardite but serve complementary roles.

Biological... Beyond Organic®

Organic is just the start

RMBA is committed to provide natural and organic products that support healthy soils. Even if a product is not listed as 'organic' you can rest assured that it will help, not hurt your soil.