0602.90.50.00/Agaricus bisporus Mushroom Spawn/Japan

Agaricus bisporus Mushroom Spawn from Japan

This is live spawn of Agaricus bisporus (button mushrooms), consisting of mycelium grown on sterilized grain substrate, used by growers to inoculate compost beds for commercial mushroom production. It falls under HTS 0602.90.5000 as mushroom spawn, which is classified as a live plant product for propagation in the context of fungal cultivation. The product is supplied by specialized mushroom spawn producers for planting in controlled environments.

Duty Rate — Japan → United States

10%

Rate breakdown

9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter

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Import Tips

• Obtain a phytosanitary certificate from the exporting country confirming the spawn is free from pests and diseases, as required for live plant materials under USDA APHIS regulations

• Verify viability upon arrival with customs; non-viable spawn may be reclassified or denied entry to prevent agricultural risks

• Label packages clearly as 'mushroom spawn for propagation' to avoid confusion with food products under Chapter 7