Redox Bio-Nutrients has announced that its Mainstay Calcium 2.0 product has been awarded the Certified Biostimulant label by The Fertilizer Institute (TFI), a milestone that positions the company at the forefront of the growing U.S. biostimulant sector. The certification confirms that Mainstay Calcium 2.0 complies with the Biostimulant Industry Guidelines established by TFI, demonstrating adherence to recognized benchmarks for efficacy, safety, and composition.

For the agricultural industry, where the biostimulant category has expanded rapidly but remained fragmented, the certification program is designed to bring clarity and trust across the supply chain. It gives manufacturers third-party validation of their processes, provides ag retailers with a framework to evaluate product credibility, and reassures growers that certified solutions have undergone rigorous testing and meet industry-recognized standards.

The designation underscores Redox Bio-Nutrients’ commitment to both product integrity and sustainable farming practices. Mainstay Calcium 2.0 is already recognized for enhancing plant health and improving calcium utilization in crops; the certification now reinforces that its formulation is consistent, reliable, and supported by data. For growers navigating an increasingly complex input market, the label provides a credible signal for decision-making at a time when pressure to balance productivity with sustainability is intensifying.

The certification also comes at a pivotal moment for the biostimulant industry in the United States. With adoption accelerating across specialty crops and row crops alike, regulatory clarity and product standardization have become central to scaling the market. TFI’s program, launched to set a clear baseline for product claims and performance, is seen as an important step toward mainstreaming biostimulants within integrated crop management systems.

Redox Bio-Nutrients, which has built its reputation on plant nutrition solutions that advance soil health and long-term farm resilience, views the Certified Biostimulant label as both validation and opportunity. By aligning its products with national standards, the company aims to increase grower confidence, deepen retail partnerships, and accelerate adoption of biostimulants as a reliable complement to conventional inputs.

The recognition further reflects the broader shift in U.S. agriculture toward sustainable practices, where certified products are expected to play a crucial role in meeting yield goals while safeguarding soil and environmental health. For Redox, the certification is not just a label—it is a market differentiator that reinforces the company’s strategy of driving innovation in plant nutrition through proven, science-backed solutions.