Retail-packaged herbicides, weed killers, antisprouting agents, and plant-growth regulators are among the highest-volume agrochemical imports entering the US, and all require EPA FIFRA registration prior to importation. Plant-growth regulators — which alter the rate or direction of plant development rather than killing pests — are classified alongside herbicides here, a grouping that sometimes surprises importers accustomed to thinking of them as distinct product categories. Glyphosate-based and other broad-spectrum herbicide formulations from multiple origins have been subject to antidumping and countervailing duty investigations, making origin and pricing documentation especially important for cost-sensitive buyers.

AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.