---
product_id: 10257399
title: "GS Plant Foods Humic Acid Soil Amendment – Leonardite-Derived Liquid Concentrate for Improved Soil Structure & Nutrient Availability – OMRI Listed for Organic Use – 1 Gallon"
brand: "gs plant foods"
price: "A$192"
currency: AUD
in_stock: true
reviews_count: 8
category: "Gs Plant Foods"
url: https://www.desertcart.com.au/products/10257399-gs-plant-foods-humic-acid-soil-amendment-leonardite-derived-liquid
store_origin: AU
region: Australia
---

# OMRI listed organic 1 gal liquid concentrate Derived from pure Leonardite GS Plant Foods Humic Acid Soil Amendment – Leonardite-Derived Liquid Concentrate for Improved Soil Structure & Nutrient Availability – OMRI Listed for Organic Use – 1 Gallon

**Brand:** gs plant foods
**Price:** A$192
**Availability:** ✅ In Stock

## Summary

> 🌿 Transform your soil, transform your garden—grow smarter, not harder!

## Quick Answers

- **What is this?** GS Plant Foods Humic Acid Soil Amendment – Leonardite-Derived Liquid Concentrate for Improved Soil Structure & Nutrient Availability – OMRI Listed for Organic Use – 1 Gallon by gs plant foods
- **How much does it cost?** A$192 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/10257399-gs-plant-foods-humic-acid-soil-amendment-leonardite-derived-liquid)

## Best For

- gs plant foods enthusiasts

## Why This Product

- Trusted gs plant foods brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Root Zone Revitalizer:** Enhances nutrient exchange & supports resilient root development
- • **Universal Garden Ally:** Compatible with most fertilizers—perfect for indoor & outdoor plants
- • **Premium Leonardite Power:** Sourced from high-quality deposits for long-term soil vitality
- • **Certified Organic Confidence:** OMRI listed for seamless integration into organic and regenerative practices
- • **Unlock Soil’s Full Potential:** Boosts cation exchange capacity for max nutrient uptake

## Overview

GS Plant Foods Humic Acid is a 1-gallon liquid soil amendment derived from premium Leonardite, designed to improve soil structure and nutrient availability. OMRI listed for organic use, it enhances cation exchange capacity, supports healthy root zones, and works seamlessly with most fertilizer programs to boost plant growth and productivity across gardens, lawns, and indoor plants.

## Description

desertcart.com: GS Plant Foods Humic Acid Soil Amendment – Leonardite-Derived Liquid Concentrate for Improved Soil Structure & Nutrient Availability – OMRI Listed for Organic Use – 1 Gallon : Patio, Lawn & Garden

Review: Outstanding - Great product. My lawn is so thick and lush from just one application that my lawn mower moves in slow motion from the drag of the grass against the bottom of the grass bag. It is very noticeable. It turns your soil into a super growth medium.
Review: Great for my indoor garden. Helps plant to use the nutrients in the soil. - I grow most of our veggies and herbs year around under LED lighting. I had been adding compost to my potting soil, but found that compost lowers the PH of the soil as it decomposes for use by the plants. This humic acid is organic, has the same benefits as compost, but does not change the PH of the soil as it does not have to be broken down for use by plants. Humic acid is not a fertilizer per se. It is an effective soil conditioner that should be used with fertilizer to help the plants utilize the nutrient in the soil. The only warning on the bottle is that this product should not be used with fertilizers high in calcium (calcium nitrate) or have a low PH. Before buying this product, I did some research and found this information. The benefits of using liquid humic acid are: 1) It improves the availability of micronutrients in the soil, allowing roots to absorb the more efficiently. 2) It enhances soil texture by promoting better aeration and water retention. 3) It feeds microbes that help plants grow naturally. 4) It works for both indoor and outdoor plants. 5) It can significantly impact plant health, resilience, and productivity. 6) It does not change the PH of the soil. To summarize, liquid humic acid improves the soil, feeds beneficial microbes in the soil, and helps plants to utilize nutrients in the soil. Since the recommended usage of the product is 1/4 to 1/2 cup per gallon of water, the gallon size is much more economical depending on your watering needs. Although I use this humic acid on some of my younger plants, I have found it to be most beneficial on my older plants since many of them are 2-5 years old. I have been adding this product to my watering water once or twice a month and my plants are all doing great. Veggie greens are growing faster, and fruiting veggies such as tomatoes and peppers are getting more and larger fruit. If you are serious about the plants you grow, I recommend trying this humic acid to see an increase in productivity. I hope this review was helpful for you.

## Features

- 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 development—without 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00CSAOFUG |
| Best Sellers Rank | #13,852 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #547 in Garden Fertilizers |
| Brand | GS Plant Foods |
| Brand Name | GS Plant Foods |
| Coverage | Medium |
| Customer Reviews | 4.6 out of 5 stars 2,458 Reviews |
| Global Trade Identification Number | 00700621098157 |
| Item Form | Liquid |
| Item Weight | 8 Pounds |
| Liquid Volume | 1 Gallons |
| Manufacturer | GS Plant Foods |
| Mixing Ratio | 1:64 |
| Model Number | HA1gal |
| Specific Uses For Product | Plant Growth, Root Develpoment, Nutrient Uptake |
| Target Species | plants |
| UPC | 700621098157 |
| Unit Count | 128.0 Fluid Ounces |

## Product Details

- **Brand:** GS Plant Foods
- **Item Form:** Liquid
- **Item Weight:** 9 Pounds
- **Liquid Volume:** 1 Gallons
- **Specific Uses For Product:** Plant Growth, Root Develpoment, Nutrient Uptake

## Images

![GS Plant Foods Humic Acid Soil Amendment – Leonardite-Derived Liquid Concentrate for Improved Soil Structure & Nutrient Availability – OMRI Listed for Organic Use – 1 Gallon - Image 1](https://m.media-amazon.com/images/I/711d-nF1uML.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Outstanding
*by M***Y on November 9, 2025*

Great product. My lawn is so thick and lush from just one application that my lawn mower moves in slow motion from the drag of the grass against the bottom of the grass bag. It is very noticeable. It turns your soil into a super growth medium.

### ⭐⭐⭐⭐⭐ Great for my indoor garden. Helps plant to use the nutrients in the soil.
*by J***. on September 24, 2025*

I grow most of our veggies and herbs year around under LED lighting. I had been adding compost to my potting soil, but found that compost lowers the PH of the soil as it decomposes for use by the plants. This humic acid is organic, has the same benefits as compost, but does not change the PH of the soil as it does not have to be broken down for use by plants. Humic acid is not a fertilizer per se. It is an effective soil conditioner that should be used with fertilizer to help the plants utilize the nutrient in the soil. The only warning on the bottle is that this product should not be used with fertilizers high in calcium (calcium nitrate) or have a low PH. Before buying this product, I did some research and found this information. The benefits of using liquid humic acid are: 1) It improves the availability of micronutrients in the soil, allowing roots to absorb the more efficiently. 2) It enhances soil texture by promoting better aeration and water retention. 3) It feeds microbes that help plants grow naturally. 4) It works for both indoor and outdoor plants. 5) It can significantly impact plant health, resilience, and productivity. 6) It does not change the PH of the soil. To summarize, liquid humic acid improves the soil, feeds beneficial microbes in the soil, and helps plants to utilize nutrients in the soil. Since the recommended usage of the product is 1/4 to 1/2 cup per gallon of water, the gallon size is much more economical depending on your watering needs. Although I use this humic acid on some of my younger plants, I have found it to be most beneficial on my older plants since many of them are 2-5 years old. I have been adding this product to my watering water once or twice a month and my plants are all doing great. Veggie greens are growing faster, and fruiting veggies such as tomatoes and peppers are getting more and larger fruit. If you are serious about the plants you grow, I recommend trying this humic acid to see an increase in productivity. I hope this review was helpful for you.

### ⭐⭐⭐⭐⭐ Underrated overachieving miracle worker!
*by A***R on November 29, 2025*

This stuff works!! So much so I immediately bought another bottle. I usually use my own soiless aroid mix, and decided to give this a try to see if it would help my plants with better absorption of nutrients and fertilizer. Within 24 hours of application, a failing pothos I was prepared to throw away perked back up!! This was the only product I used with distilled water and the results were remarkable! The leaves were standing at full attention again instead of looking like noodles. The color was starting to deepen- all because of this product! It does have a slight odor, but that's to be expected with organic products if they truly are organic. Since purchasing this, I have bought almost every product they offer with the BEST success! 1st Pic is the before, 2nd picture is 24 hours later!

## Frequently Bought Together

- GS Plant Foods Organic Liquid Humic Acid with Fulvic - Concentrate Fertilizer for Enhanced Nutrient Uptake and Soil Conditioning - 1 Gallon
- Organic Kelp Fertilizer by GS Plant Foods - Omri Certified (1 Quart) - Kelp Fertilizer for Gardens, Lawns & Soil
- Root Ruckus Compost Fertilizer Organic - Turbo Charged Compost for Plants - Humic Acid & Sea Kelp Nutritional Root Supplement for Lawns, Soil, Shrubs & Vegetables - 1 Gallon

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-27*