fulvic acid cannabis

Improving your Cannabis yields with Fulvic and Humic Acids

Fulvic acid has both direct and indirect effects on plant growth. Indirect effects comprise of the factors that; make available energy for use by organisms in the soil, influence water retention, improve soil structure, avail trace elements to the plants and influence soil fertility. Direct effects comprise of the changes in plant metabolism that take place after the application of fulvic acid and humic acids (Smith, 2017).

Fulvic acid help mediate the uptake of essential mineral elements contributing to improved plant growth. One stimulating influence of fulvic and humic acid on plant growth is the absorption of mineral elements such as nitrogen, potassium and phosphorus. The small size of fulvic acid molecules enables plants to readily uptake nutrients. Also, fulvic acids act as chelators preventing different nutrients from reacting with each other before plants can uptake them increasing the ability of plants to take up nutrients for better growth. This effect enables plants to absorb different nutrients more efficiently, therefore, facilitating stronger growth.

The uptake of fulvic and humic substances has a positive impact on seed germination. The application of fulvic acid improves seed germination rates. When fulvic acid enters the seed cells, there is an increase in cell division and respiration rates. The increase in respiration rate plays a crucial role in root meristem development and helps activate several growing points in the seedlings.

Fulvic acid has a significant impact on root initiation and improved root development. Fulvic acid acts as a root stimulator. Accordingly, there is further stimulation of root growth when fulvic acid is applied together with humic acid (Smith, 2017). The small molecules of fulvic acid play a significant role in root stimulation. Nevertheless, fulvic and humic acid provides plant cells with free radicals which act as electron donors. Free radicals have positive impacts on seed germination, root development and the overall plant growth.

When applied together with trace elements and foliar sprays, fulvic acid helps increase the growth of plant foliage, fruits and roots. An increase in plant growth positively impacts processes in the leaves and the stem, therefore, increasing the carbohydrate content stored in these parts. Fulvic acid enhances the metabolic processes and the carbohydrate production. Thus, there is an increase in the overall plant yields and brix levels. As so, higher brix levels in cannabis plants will directly lead to stronger resilience against pests and diseases, increased resin and oil production, as well as increased terpene production.

Fulvic acid plays a vital role in the uptake of iron. Fulvic acid prevents iron from being oxidized and turning into rust by keeping it in soluble form. Fulvic acid also enables plant membranes to easily absorb iron (Bocanegra, Lobartini, & Orioli, 2006). Iron acts as a catalyst, as the plant takes up more iron, it increases its green pigment that absorbs light to manufacture sugars. These sugars provide energy for plant growth and also act as food stores. Hence, increased food stores contribute to an increase in crop yields.

Fulvic and humic acid directly impact the plant cell membranes. Fulvic acid increases permeability causing improvement in the transportation of minerals to plant parts of metabolic need. Moreover, fulvic acid accelerates the chlorophyll content in the leaves. An increase in the chlorophyll content in the leaves has a direct impact on the uptake of oxygen. Fulvic acid also elevates the concentration of messenger ribonucleic acid which is beneficial for their effect on the biochemical processes in plant cells. Increase in biochemical processes causes increased enzyme synthesis and protein content.

Ultimately, fulvic acid acts as a protector of plants against stress. Stress in plants can be a significant contributor to reduced yields. Fulvic and humic acid enable a plant to produce a protective agent called superoxide dismutase (SOD). SOD helps sponge the free radicals and shields chloroplasts and cell membranes. Increased SOD levels guard plants against stress resulting from drought (Anjum, Wang, Farooq, Xue, & Ali, 2011). Hence, at such adverse conditions, crops can maintain their yields.

Indeed, fulvic acid plays a crucial role in improving plant growth and yields. The role of fulvic acid in enhancing plant growth and yields is clear, which is why we strongly advise at incorporating some type of fulvic/humic in your regiment. If you’re having trouble deciding on a fulvic/humic product, then it’s the perfect time to try FulBase our carbohydrate derived fulvic acid/humic acid product into your gardens. If you’re looking for something in powder form, then MycoRhize our 12 fungi species blended with humic and algae extracts is also another great add-on to any regiment. Use any of these products and experience the improvement in your crop growth and yields!

Anjum, S. A., Wang, L., Farooq, M., Xue, L., & Ali, S. (2011). Fulvic Acid Application Improves the Maize Performance under Well-watered and Drought Conditions. Journal Of Agronomy & Crop Science, 197(6), 409-417. doi:10.1111/j.1439-037X.2011.00483.x

Bocanegra, M. P., Lobartini, J. C., & Orioli, G. A. (2006). Plant Uptake of Iron Chelated by Humic Acid of Different Molecular Weights. Communications In Soil Science & Plant Analysis, 37(1/2), 239-248. doi:10.1080/00103620500408779

Fulvic acid can be applied in different growing situations to improve plant growth and plant yields. This article explains the reason behind the comprehensive application of fulvic acid in areas such as organic plant production horticultural programs and greenhouses. Fulvic acid has both direct and indirect effects on

The Benefits Of Humic And Fulvic Acids For Growing Cannabis

Increasingly, more cannabis farmers are taking advantage of the benefits of humic and fulvic acids. These acids ensure healthy roots and better nutrient uptake to support happier plants with larger yield potential. Learn why you should incorporate humic and fulvic acids into your next grow.

Humic and fulvic acids are great natural growth enhancers that support your plants in many ways. They increase nutrient uptake, help establish healthier roots, and ensure all-around healthier plant development during all stages of growth. Not only do humic and fulvic acids result in greater yield potential, they can also be used no matter what type of grow-op you run, be it soil or hydroponics.


Most cannabis cultivators today use systems that are low in humic and fulvic acids. Some types of marijuana grows, like typical hydroponic setups, employ inert media such as hydroton or perlite, which do not contain any humic or fulvic acids at all. For soil grows indoors or outdoors, things do not look much better. Soil is most often depleted of these acids or contains only trace amounts. You can greatly improve the growing conditions for your cannabis plants by adding humic and fulvic acids to the equation.


Humic and fulvic acids work well together, with each providing its own benefits for better plant growth. Humic acid improves soil health and growth, while fulvic acid naturally facilitates your plant’s absorption and use of available nutrients.


Humic acids are complex acids resulting from the breakdown of dead organic material by soil microorganisms. They are dark brown to black in colour, and are soluble in alkaline water.

Humic acid has a high molecular weight, which makes it an excellent natural soil conditioner. It improves the properties of soil by supplementing and rejuvenating it. At the same time, humic acid improves availability, mobility, and management of nutrients in the substrate, and improves water retention.

What makes humic acid an excellent soil conditioner is its chelating ability; it attaches to micronutrients and forms a bond with them so that these nutrients can be more easily absorbed by plants. Humic acid also promotes improved ion-exchange and better soil buffering capabilities.

Humic acid actively allows for nutrients and minerals such as calcium, iron, magnesium, zinc, and manganese to be absorbed readily, stimulating improved plant growth and healthy roots. This works in any type of grow and provides benefits during all stages, from the seedling that just sprouted to mature cannabis plants.


Fulvic acid has a close relationship with humic acid, which is the reason why some refer to it simply as a “fancier” version. It is a humic material that is light yellow to brown, but unlike humic acid, is soluble at all pH levels—acidic and alkaline. Its molecular weight is lower than that of humic acid since it has less carbon but a higher oxygen content.

The lower molecular weight gives fulvic acid an excellent ability to cross the membranes of plant cells so it can easily penetrate into leaves. This makes fulvic acid particularly efficient when used as a foliar spray to provide nutrients to plants quickly. But you can also use it via irrigation by mixing it with your regular nutrient solution.

Furthermore, both humic and fulvic acid reduce the amount of nutrients that your plants need. For cultivators, this means healthy growth and excellent yields are achievable at a fraction of the cost.


Here are some of the benefits of using humic and fulvic acids for your cannabis plants:

  • Improves nutrient uptake and mobility via chelating action
  • Improves water retention and drainage of soil
  • Improves buffering capacity and cation exchange
  • Supports healthy microbial activity
  • Decreases plant uptake of toxins in soil
  • Improves photosynthesis
  • Boosts plant metabolism and cell division for better growth
  • Reduces amount of nutrients plants need


Cannabis cultivators can use humic substances in many ways. You can add them to your usual watering and nutrient regimen or use them as foliar spray. You can also add them to your soil in dry, powdered form.

Humic acid is available as a liquid or powder that you can dilute with water. This way, you can easily make a spray for foliar application. Apply the spray liberally to your plants’ leaves during veg, including the underside.

One other curious benefit of foliar-spraying plants with fulvic acid is that it can substitute for sunlight. It has been observed that foliar application of fulvic acid makes photosynthesis continue, even when it is overcast for a longer time period. Because of this effect, which is not yet entirely understood, fulvic acid is sometimes used commercially to rejuvenate green areas that are shaded.


Humic substances are available in various forms and in different concentrations. If you are not sure about what type to get, it’s recommended that you visit a reputable garden store in person, where the staff can advise you on the right type to get. They can also let you know about the proper dosage for your plants so you can avoid overdosing. Most of the time, it’s better to administer humic substances frequently, but in smaller doses. Always make sure you read the dosage instructions for your particular product.


Humic and fulvic acids are excellent to use together with a well-balanced nutritional program. They benefit your plants throughout all stages of growth, and can even save you money on nutrients. With the help of humic and fulvic acids, you can ensure that your plants are getting the most out of their available nutrients.

Learn how humic and fulvic acids can help take your cannabis grow to the next level. No matter if you grow in soil or hydro, these acids are super beneficial.