1. Short title This Act may be cited as the Plant Biostimulant Act of 2023 . 2. Exclusion from regulation under FIFRA (a) In general The Federal Insecticide, Fungicide, and Rodenticide Act ( 7 U.S.C. 136 et seq. ) is amended by inserting after section 3 ( 7 U.S.C. 136a ) the following: 3A. Exclusion of plant biostimulants A plant biostimulant shall not be subject to regulation under this Act. . (b) Definitions Section 2 of the Federal Insecticide, Fungicide, and Rodenticide Act ( 7 U.S.C. 136 ) is amended— (1) in subsection (v)— (A) by striking vitamin-hormone horticultural products and inserting vitamin hormone products ; and (B) by adding at the end the following: Such term shall not include a plant biostimulant. ; and (2) by adding at the end the following: (pp) Plant biostimulant The term plant biostimulant means a substance, micro-organism, or mixture thereof, that, when applied to seeds, plants, the rhizosphere, soil, or other growth media, act to support a plant’s natural processes independently of the biostimulant’s nutrient content, thereby improving nutrient availability, uptake or use efficiency, tolerance to abiotic stress, and consequent growth, development, quality, or yield. (qq) Nutritional chemical The term nutritional chemical — (1) means a compound or mixture that interacts with plant nutrients in a manner which improves nutrient availability or aids the plant in acquiring or utilizing plant nutrients