Learn How Better Soil Supports Better Growth
Verdant translates soil science, product formats, and practical application concepts for growers, professionals, retailers, and home gardeners.
Humic products complement, rather than automatically replace, a complete fertility program. Results vary with product composition, soil, crop, weather, rate, and application method.
Practical Planning Checklist
- Soil/crop objective
- Current fertility program
- Application equipment
- Product format
- Rate and timing
- Compatibility/jar test where appropriate
- Trial block
- Observe and document
What Are Humic Substances?
Humic substances are naturally occurring organic components associated with decomposed organic matter. They are primarily categorized into humic acid, fulvic fractions, and humin. These substances play a fundamental role in soil chemistry and biology, providing a stable foundation for nutrient exchange and soil structure. While they are powerful tools for soil health, it is important to understand them as part of a natural cycle rather than a synthetic miracle; they help optimize the soil environment but do not replace the need for balanced nutrition.
Humic Acid vs. Fulvic Acid
The distinction between humic and fulvic acids lies mainly in their molecular size, solubility, and behavior in the soil profile. Humic acids are larger molecules that are soluble in alkaline conditions and are excellent for improving long-term soil structure and cation exchange capacity. Fulvic acids are smaller, more biologically active molecules that remain soluble across all pH levels, making them highly effective for nutrient transport and foliar applications. Neither is universally better; instead, their use depends on specific product formats, application methods, and soil goals.
How Humic Products Fit Into a Fertility Program
Humic products are designed to complement, not replace, a complete fertility program. They work alongside NPK and crop nutrition plans by enhancing nutrient uptake efficiency and supporting soil biology. For successful integration, growers should rely on regular soil testing to determine baseline needs, conduct compatibility jar tests before mixing, and always follow label directions. Starting with small trial blocks allows for the observation of how these products interact with your specific crops, soil types, and weather conditions.
Choosing Granular, Soluble or Liquid Formats
Selecting the right format is a matter of scale, equipment, and handling requirements. Granular and pelletized products are ideal for soil blending or broadcast application, offering ease of handling and dry storage. Soluble powders and tablets provide a concentrated, cost-effective way to transport humics, requiring dissolution before use in fertigation or sprayers. Liquid formats offer the highest level of convenience for immediate tank mixing but require appropriate storage and consideration for freight. Each format maintains product integrity when stored according to guidelines.
What OMRI Listed® Means
The Organic Materials Review Institute (OMRI) is an independent organization that reviews specific input products for use in certified organic production under applicable standards. It is critical to note that an OMRI listing applies only to specifically listed products and does not automatically extend to Verdant’s entire portfolio. Users must verify the current listing status of any individual product, ensure it meets their specific certification requirements, and always adhere to the application instructions on the product label.
Educational information is general and is not a substitute for a product label, soil or tissue analysis, agronomic advice, or crop-specific recommendations. Product suitability and results vary by conditions and use.