

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





| 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 |
M**Y
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.
J**.
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.
A**R
Underrated overachieving miracle worker!
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!
C**R
Great product, a bit diluted.
The product is great. It's high quality and I may buy it again. It's not as concentrated as other products. This is a problem for me. It could be significantly more concentrated, so you end up paying for a significant amount of water. It's not a rip off though. It's a good deal and because it's more diluted it's not as messy and it will not clog up my sprayer ever. With thicker products I sometimes cut them with water so it's smoother in my sprayer.
G**R
Good quality
One of the best brand and best product 10 stars
C**E
I’m Hopeful, I’ glad it works for me!
Very fast shipping. Received on a Sunday delivery. I’ve only used once so far. I’m hoping this helps. New community and poor/cheap sod used for landscaping by builder. Clay/sand mix so really depending on this to help over time. UPDATE:: So I have been using this since I received it and have now ordered my second bottle. Never had bugs in mine, not lazy but needed help with a dying lawn. New sod planted in late February in full sun from daylight to night. Community has bad lawn cutters who scalped all lawns by cutting so low it pulled out patches of sod. All lawns in community are dying now. Thankfully I took the chance and bought this. I did a complete overhaul of the grass and used this the first time, within one week my neighbors were asking me what I did to my grass. I looked and my grass was rich green and growing. Second application brought even better results. Gave a one time dose to my neighbor, same results. Now I have neighbors on both side apologizing for their lawns making mine look bad. Mine is the darkest, healthiest, fully grown grass on the block. In a few weeks my lawn went from dry, washed out color, dying patches, brown spots, little growth to a full lush lawn. Got my second bottle and now I use on all living plants in and around my home. If anyone knows of something better then yeah for you, for me this is my go too. Planning my veggie garden already with this as an essential element!
T**Y
So far so good!
I use this product about once a month and it works great. The liquid is concentrated nutrient so handle with care (or gloves). But so far it seems to adequately add nutrient to the soil for my grass and plants. Its easy to apply if you have a liquid fertilizer sprayer attachment that you can screw onto your garden hose. I haven't noticed any remarkable difference in my grass and plants, but I also haven't seen any of them show signs of nutrient deficiency, so I'd say its working well.
H**R
Good Economical Choice
I use this annually for my bushes, shrubs, flowers, landscaping. I can't attest how well this product works but I have some poor soil I have improved and my plants are doing great. Check the optimal temperatures for applying humic acid which is generally milder temperatures in the spring and autumn.
Trustpilot
3 weeks ago
2 weeks ago