Residual crops that do not fit neatly into dedicated NAICS categories — such as certain herbs, hops, maple sap, and specialty botanicals — fall under this catch-all classification. For trade professionals, the heterogeneous nature of this grouping means that HTS classification must be determined product by product, as duty rates, admissibility requirements, and applicable agencies vary widely across the constituent commodities. USDA APHIS quarantine rules may apply to plant-based materials, and FDA oversight applies to any items intended for human consumption or use as food ingredients.

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