The Plant Biostimulant Act of 2025 establishes a consistent federal definition for plant biostimulants—substances, microorganisms, or mixtures that improve plants' natural processes by enhancing nutrient uptake, stress tolerance, and crop yields—by amending the Federal Insecticide, Fungicide, and Rodenticide Act. The bill specifically excludes basic plant nutrients and products of biological origin from stricter regulatory oversight, giving farmers and agricultural companies clearer guidance on which products require federal approval. The Environmental Protection Agency must update its regulations to reflect these new definitions within 120 days of the bill's enactment. Additionally, the Agriculture Department will conduct a two-year study on how plant biostimulants can improve soil health, reduce nutrient runoff into waterways, increase carbon sequestration, and support sustainable farming practices, with results reported to Congress. No specific funding amount is specified in the legislation.
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