Humuson Complex 400 (16oz)
$24.99 – $525.00Price range: $24.99 through $525.00
Humuson Complex 400 (16oz) is a more concentrated product than Humuson 200 and is made from sapropel and peat, and manufactured with our unique technology that creates highly polarized molecules of active ingredients. Thus, it is more effective and efficient than the competition. It nourishes plants and beneficial soil bacteria, restoring soil fertility. Suitable for fruits, vegetables, row crops, or turf, this product enhances nutrient absorption, boosts water retention, raises yields, and can even improve crop flavor.
9.5 X MORE concentrated than the leading plant food brand.
Humuson 400 is suitable for all irrigation systems. However, if you are planning on applying our products with any other chemical fertilizers, pesticides or fungicides, choose Humuson Complex 200 due to the smallest particle size.
This product is certified by Ecocert and is suitable for organic farming.

Size:
Product Features
Humuson Complex 400 works through several natural mechanisms to improve soil and plant health. It acts as an adaptogen, helps chelate nutrients, increases absorption of nutrients, and supports the natural microorganisms in the soil.
Absorption and Chelation:
Humuson Complex 400 contains carbon that keeps nutrients in the topsoil, making them more accessible to plants. Large molecules in Humuson 400 bind heavy metals and harmful substances, removing them from the soil and preventing them from entering plant tissues. Smaller molecules help make nutritional elements more available to plants.
Symbiosis
Carbon, amino acids, and vitamins in Humuson 400 support soil bacteria and fungi, which in turn do their jobs that are vital for plant nutrition and growth. Humuson 400 provides a good environment for these microorganisms, even in soils with low organic content. This boosts the cycling of nutrients in the soil and helps plants and soil microorganisms work together better.
Adaptogenic
Humuson 400 has high concentrations of humates, which stimulate plant growth and development from seed to maturity. Humates improve cell membrane permeability, increase chlorophyll content, enhance photosynthesis, and boost protein synthesis. They also bind with harmful substances in the soil, like heavy metals and pesticide residues, making them inactive and preventing them from entering the food chain. This enhances the activity of soil microflora, which helps break down toxic organic compounds. Overall, Humuson 400 helps plants adapt to unfavorable climate conditions, making them stronger and healthier.
General Content
Product Specifications:
- State of aggregation: Liquid
- Particle size: 500 microns (32 U.S. Mesh (98% accuracy))
- Density at 68 F: 11.68 lb/gal
- Solubility: 98%
- Biodegradable: 100%
Guaranteed Analysis
Derived from Sapropel (dead lake sediment) and Peat, extracted with Potassium Hydroxide.
Total Nitrogen (N)……………………………….0.625 %
0.29 % Ammoniacal Nitrogen
0.005 % Nitrate Nitrogen
0.33 % Water Insoluble Nitrogen
Available Phosphate (P₂O₅)……………………0.65 %
Soluble Potash (K₂O)…………………………… 1.77 %
Molybdenum (Mo)* …………………………<0.001 %
Cobalt (Co)……………………………………..<0.001 %
CaCO3 ………………………………………………1.90 %
*WARNING: the application of fertilizing materials containing molybdenum (Mo) may result in forage crops containing levels of molybdenum (Mo) which are toxic to ruminant animals.
- ALSO CONTAINS NONPLANT FOOD INGREDIENT(S):/
- ALSO CONTAINS BENEFICIAL SUBSTANCES
- 2.4 % Humic Acids derived from sapropel and peat
- 2.3 % Fulvic Acids derived from sapropel and peat
- Total other Ingredients (inert as nonplant food ingredients): 95.3%
- PURPOSE: Helps improve soil tilth and may aid in micronutrient uptake
16 oz bottle: This bottle makes 50 gallons of plant food and covers half an acre per application or a 5,400 square foot garden if applied 4 times (every two weeks) per the 3 month growing season.
32 oz bottle: This bottle makes 100 gallons of plant food and covers an acre per application or a ~10,800 square foot garden if applied 4 times (every two weeks) per the 3 month growing season.
20 L bottle: Recommended dose is 1 quart per acre per application. This jug will cover about 20-25 acres per application. Recommended 3-6 applications per growing season.
1,000 L tote: Recommended dose is 1 quart per acre per application. This tote will cover 1,000 – 1,056 acres per application. Recommended 3-6 applications per growing season.
Humuson Complex 400 is designed for the use in conventional and organic agriculture. Liquid concentrated biohumus is an ideal choice for watering the soil, crops and already planted indoor and outdoor plants and seedlings throughout the entire growing period.
Improved formula, the use of unique materials and non-standard production processes allow Humuson Complex 400 to:
- Increase yields (field trials have consistently shown 15 to 30% increases in yields on a
variety of crops, however, Humuson does not guarantee a specific result); - Contribute to soil fertility;
- Save on fertilization budget due to the increased absorption of mineral fertilizers;
- Reduce costs of managing soil productivity;
- Impact plant development through soil quality and increasing soil biota activity;
- Improve crops‘ taste and development due to the presence of over 40 elements, all of
which have natural origin.
- Mix 1 tablespoon of product with 3 gallons of water;
- Feed by thoroughly soaking the soil around each plant;
- For foliar application, use a spray bottle or portable sprayer and spray directly on the leaves;
- Avoid spraying during the flowering stage;
- Can be used in soil or directly on leaves;
- For best results, the first application should be in soil, all subsequent ones, foliar;
- Reapply every 7-14 days for best results;
- Watch your plants grow!
- Predilute the product with water 1:20 and mix well. Add the mixture to the remaining 390 parts of water for a total rate of 1:400.
- Apply though pivot or flood irrigation system. Check the particle and filter size before running through a drip system. Do not use together with other fertilizers unless properly diluted at not less than the recommended rate.
- Can be applied with any other chemical fertilizers, fungicides, or pesticides. Humuson 400 works well as a sticky agent and ensures a more extended stay 0f pesticides and fungicides on the leaves.
- DO NOT APPLY WITH HERBICIDES. WAIT 6-7 DAYS AFTER HERBICIDE APPLICATION BEFORE APPLYING HUMUSON.
- The first application in soil should be during the vegetation stages 1 to 3 below.
- Once every 14 days during vegetation period 4, 5 and 7-9. Avoid applying during the flowering period, total 3 to 4 times per season.
- If applying with NPK or trace minerals, first dilute Humuson 400 with water and then add the inorganic fertilizers. Check your irrigation system maximum particle size prior to running it through.

Use during the vegetation period for outdoor crops and all year round for indoor plants. Refer to the image below. Avoid spraying during the flowering stage (6).

Where to use:
Use on anything that grows: trees, shrubs, vegetables, flowers, grass, herbs and houseplants. Can be used indoor and outdoor as well as in greenhouses.
You can soak your seeds prior to planting in a Humuson 200 water solution. Dilute it 1:400 and soak the seeds as recommended by the seed producer.
Frequently Asked Questions
Do Humuson products contain pathogens?
No. Sapropel is a naturally originated microbial cell-free colloid structure. Check out the microbial analysis.
How are Humuson products sourced?
Humuson is made from raw material, sapropel, which is a freshwater lake sediment that has decomposed naturally in non-aerobic conditions for more than 10,000 years. Sapropel naturally contains more than 40 different nutritional elements. The process of extracting Sapropel not only helps create our unique products but restores the biotop of the freshwater lakes from which it’s extracted, preventing them from drying out.This leads to the restoration of fish populations, beetle colonies and other important participants in the lake’s ecosystem. Moreover, the restoration of the lake’s ecosystem leads to the increase of carbon dioxide uptake from the environment.
Do Humuson products contain any biosolids?
No, our products do not contain any biosolids. In addition, Humuson is completely manure free.
Do Humuson products contain harmful chemicals or metals?
No. Humuson products do not contain any harmful chemicals or harmful amounts of heavy metals. For a heavy metals analysis, click the link.
Can I use Humuson products in hydroponics systems?
Yes! Humuson is suitable for hydroponic systems. Since it’s organic and promotes the growth of beneficial microbes, you might need to clean your system a bit more frequently. Ultimately, it leads to a richer taste and bloom quality in your crops. Choose the Humuson 200 product for hydroponics systems. If you are pretreating the seeds, soak them in the solution of 1:400 (double the water).
Are Humuson products toxic?
No. It was experimentally established that the sapropel of the source lake does not have a harmful or toxic effect on the CNSs functional state and the liver, kidneys, heart, and stomach of rats. Sapropel does not exhibit sensitizing and locally irritating properties and belongs to the class of practically non-toxic substances (toxicity Class V). Here is a link to the full toxicology report.
Can I use Humuson products year round?
Yes, you can use our product all year around. It will positively affect soil fertility and plant vitality, which in turn can boost the economic yield of your agricultural endeavors.
Are Humuson products non-GMO and are Humuson products really organic?
Yes, all Humuson products are certified by Ecocert. Humuson 400 and Industrial are OMRI listed, and Industrial is additionally certified USDA organic by the Washington Department of Agriculture. CDFA applications are pending.
Can I use Humuson products with other fertilizers, pesticides, fungicides or herbicides?
Yes, Humuson products can be applied with any other chemical fertilizers, fungicides, or pesticides. Humuson works well as a sticky agent and ensures a more extended stay of pesticides and fungicides on the leaves.
If running through a drip, use Humuson 200 and pre-dilute it with water before mixing it with other inputs. Failure to properly dilute it can cause clogging.
DO NOT APPLY WITH HERBICIDES. WAIT 6-7 DAYS AFTER HERBICIDE APPLICATION BEFORE APPLYING HUMUSON.
Testimonials

Michael Sabbagh
I am treating my fruit trees with Humuson. The results are just amazing, double the amount of fruit growing at a much fasterrate.

Dennis Carlson
I really like this product. I like the idea of using more of the biological products to feed the microbes in the soil. It will really help process the nutrients that are already in the soil so your plants can use them.

Rob Pak
Humuson’s organic, natural fertilizer is an amazing product! My lawn and garden have seen much improvements especially in the Arizona dry heat. Highly recommend this product!

Gaiva Leoniene
My plants have responded well to this fertilizer. My garden is thriving. I’ve seen consistent, steady growth, vibrant foliage, and good flowering and citrus fruiting. Highly recommended for organic gardening
