HGS BioScience acquires Menefee Mining Corporation & Earthgreen Products, Inc.

April 15, 2025

Paine Schwartz Partners-backed HGS BioScience, a producer of extracted humates in both granule and liquid form, has acquired Earthgreen Products, Inc. and Menefee Mining Corporation.

HGS BioScience notes it can now “elevate the quality and performance” of its humic and fulvic acid lineup, “providing growers with a broad range of products in multiple formulations to improve soil health.”

“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.”

HGS BioScience’s portfolio is led by HumiK ONE, a granule that contains the power of a humic liquid in granule form. HumiK ONE can be combined with nutrients, biologicals and biostimulants to 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.

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.

HGS BioScience adds the Menefee Mine and Cuba, New Mexico processing plants to its current footprint of six manufacturing plants and a research and development center, all located in North America.

Find out more about the latest technical and market developments in water-soluble fertilizers and biological inputs at the 23rd New AG International Annual conference and exhibition in Bangkok, Thailand, 29 April – 1 May. Sign up here.

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