HGS BioScience Acquires Earthgreen Products and Menefee Mining Corp.
April 15, 2025 Paine Schwartz Partners-backed HGS BioScience, a global leader in the production of extracted humates in both granule and liquid form, has acquired Earthgreen Products, Inc., and the world-renowned Menefee Mining Corporation. The company is now able to elevate the quality and performance of its humic and fulvic acid lineup, providing ag retailers with a broad range of products in multiple formulations to help their grower customers improve soil health. Together, HGS now has the deepest and most versatile portfolio of patented extracted granule, powder and liquid products in the industry.
“Humates mined from New Mexico’s Menefee Formation are known to be among the world’s highest quality natural humate deposits,” said HGS BioScience CEO Mike Steffeck. “Freshwater humates from this mine and its reserve typically generate higher levels of biological activity and they consistently test high in humic and fulvic acids. We’re excited to incorporate these products into the HGS BioScience lineup to enhance growers’ soils to promote plant growth and productivity.”
In addition, new extraction and formulation technology from Earthgreen allows the company to offer premium products with excellent performance.
The product portfolio can now be used to meet each customer’s complete humic and fulvic acid needs. The portfolio is led by HumiK ONE, a granule that contains all the power of a humic liquid in granule form. HumiK ONE can be combined with nutrients, biologicals, and biostimulants to conveniently deliver humic acid and biostimulants to the acre. It also now includes an expanded line of products with low-use rates, mixability with all dry fertilizers, dry formulations that can be blended into liquid products, and a full line of humic and fulvic acid-based liquid products.
“With our product portfolio and our state-of-the-art R&D facility in Sardis, Mississippi, we can help retailers create proprietary formulations and combinations of humic plus microbials, peptides, amino acids, enzymes and nutritionals in dry or liquid form to deliver unique and powerful biostimulant combinations,” Steffeck said. “We are now a one-stop shop for any ag retailers’ humic or fulvic acid needs.”
Tyler Lown Vandenburg, President of Menefee Mining Corporation will join the HGS executive team to help lead the continued transformation of the HGS business. Brett Lown, Earthgreen Head of Sales, will join the HGS commercial team to help lead strategic accounts.
“Joining HGS BioScience presents a great opportunity to see our high-quality raw materials and product line benefit from the company’s resources and reach,” said Lown. “We’re eager to continue to help growers achieve increased yields and better overall plant health.”
HGS BioScience adds the Menefee Mine and Cuba, New Mexico processing plants to its current footprint of six manufacturing plants and a state-of-the-art research and development center, all located in North America.
“These acquisitions are an exciting next step in HGS BioScience’s path of growth and innovation, and aligns with our commitment to delivering excellent value to our customers,” added Steffeck.
HGS products are easy to apply, blending seamlessly with fertilizer at a much lower use rate, rapidly solubilize in the soil to begin working immediately, and build more durable, healthy soil structures — aiding both infiltration and nutrient utilization.
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