When we talk about leonardite, we are referring to a form of humic acids that originate from the vegetation that existed during the Carboniferous period, which means we are talking about a process that began 280 million years ago and whose fundamental building element is the carbonization of those materials.
During this process, the organic juices were gradually released, initially forming shallow lagoons that also underwent carbonization, giving rise to Leonardite. Over the millions of years of its formation, Leonardite has been subjected to multiple physical, chemical, and microbiological actions, eventually reaching the form we know today.

Characteristics of our leonardite

tomate leonardita

More Porous Soil Structure

The use of leonardite also visibly improves soil structure, making it more porous and aerated — or, as it is commonly said, much more “spongy” — thereby facilitating root growth.
leonardita mejorando cultivos

Better Cellular Performance

Leonardite enhances cell growth and division in plants, resulting in more vigorous development and higher agricultural yields, significantly benefiting crops.
Freshly Harvested Organic Potatoes

Proven Results

The effects of leonardite on our soils and the results have been remarkable: tree roots grow so strongly that they extend toward the leonardite in search of its nutrients!

Humic Acid

Leonardite: fertility, balance, and life for your soil

The Leonardite we offer stands out for its concentration of humic and fulvic acids, essential components for naturally restoring and enhancing soil health.

These acids work directly on the soil structure, increasing organic matter, improving nutrient retention capacity, and significantly reducing losses due to runoff and volatilization. This translates into better fertilizer efficiency, with less waste and greater uptake by the plant.

The fulvic acids, moreover, act as natural chelating agents, facilitating the delivery of micronutrients to the roots and their effective transport to plant tissues. This ensures more balanced and complete nutrition, without interference from other compounds present in the crop environment.

The result is soil with greater biological activity, better aeration, and a naturally regulated pH, which leads to stronger, more resilient, and productive plants.

Leonardite not only improves agronomic performance but also contributes to more sustainable agriculture, caring for both the environment and the farmer’s budget.

Properties and Benefits of Leonardite in Soil

Physical Properties:

  • Improves soil structure: Ideal for clayey or very sandy soils.

  • Moisture retention: Helps water stay longer in the root zone (critical in Spain due to drought).

Chemical Properties:

  • Cation Exchange Capacity (CEC): Helps the plant better absorb nutrients already present in the soil or applied with fertilizer.

  • Nutrient release: Assists in freeing up retained phosphorus and potassium.

Biological Properties:

  • Root stimulation: Promotes the growth of young roots.

  • Natural biostimulant: Encourages beneficial microbial activity in the soil.

Unlike other chemically processed products, the properties of Ebro Leonardite come from its natural organic origin. Our goal is not to alter its composition, but to provide a stable mineral that enhances long-term fertility while staying true to our technical specifications.

Price of Leonardite in Spain and Sales Formats

At Ebro Leonardite, we specialize in distributing high-quality organic soil amendments. As direct producers, we offer competitive solutions for professional agriculture and large-scale farms.

Our main leonardite deposit is located in Mequinenza (Zaragoza, Spain), a strategic location that allows us to guarantee a constant supply and efficient logistics throughout the country. By purchasing directly from the mine, you ensure a price for leonardite in Spain without unnecessary intermediaries.

Available Sales Formats

To adapt to the needs of each crop and application system, we market our leonardite in two main formats:

  • Bulk Leonardite: Ideal for large agricultural areas and fertilizer manufacturers seeking the highest purity of mineral extracted from our Mequinenza mine.

  • Liquid Leonardite (Humic Extract): An optimized solution for fertigation, with high solubility and concentration of humic and fulvic acids.

If you want to optimize your soil structure with a locally sourced product rich in organic matter, check our sales and logistics conditions.

For orders outside of Spain
contact us for more details