Sourcing king oyster mushroom spawn from China

King oyster spawn: 0% duty

Read from the UK Trade Tariff on 29 September 2026, heading 0602 covers other live plants, roots, cuttings, slips and mushroom spawn. King oyster mushroom spawn falls within the mushroom spawn line, 0602 90 10 00, carrying 0% duty for goods from China. The table shows product formats sharing this code, rather than separate tariff subdivisions.

The supplied tariff record shows no anti-dumping or countervailing duty and no suspension for the mushroom spawn line. It attaches veterinary control and import control of organic products. The importer should confirm the applicable requirements with their customs broker before shipping from China, providing the complete carrier recipe and any organic claims. Confirm whether veterinary documentation or an organic certificate of inspection is needed for the actual consignment.

Your company must be based and certified in the UK to import organic products. Ask your approved organic control body which products you can import. Confirm the commodity code using the species, carrier and supplied form. Our wider oyster mushroom spawn guide covers the related product family.

Specify the king oyster strain and carrier

Specify king oyster mushroom, Pleurotus eryngii, the supplier's strain identifier, and whether the purchase is propagation spawn or a fruiting block. Request the complete grain or sawdust recipe, including supplements and any animal-derived ingredients. Agree pack weight, container type, filter construction, production date, batch identification and storage instructions.

Ask for a retained sample from the proposed production batch and trial it on your intended substrate. Agree how you will assess colonisation, contamination and the resulting mushroom shape. Record the supplier's recommended transport conditions and how these will be checked. Use factory verification to review culture handling, sterilisation records and batch traceability.

Worked duty example

Illustrative example, not a quote: 2,000 bags of king oyster mushroom grain spawn, illustrative only under 0602 90 10 00, invoiced at £6,000 free on board, with £900 of freight and insurance to the UK. The customs value is £6,900. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £6,900, so it is £1,380. With no duty, the only import tax is the VAT, which a VAT-registered importer can usually reclaim. The import duty and VAT guide explains each step.

Inspection checklist

Identity: match the strain identifier, carrier recipe and batch references to the order and retained sample.

Condition: inspect unopened packs for unexpected coloured growth, wet patches, uncolonised areas and premature fruiting. Separate suspect packs for assessment.

Packaging: check seals, filter patches, bottle closures, leaks and crushed cartons. Compare arrival conditions with the agreed transport instructions.

Performance: trial an arrival sample on your own substrate and compare it with the agreed acceptance criteria. Record findings using the quality inspection guide.

What goes wrong

A bag of white mycelium does not establish strain identity or growing performance. A substituted strain, contaminated carrier, damaged filter or unsuitable transport conditions can undermine the order. Keep batch references and photographs, separate affected packs and compare arrival samples with the retained sample before accepting a repeat supply.

An incomplete carrier description leaves the veterinary-control question unresolved; an organic claim also needs checking before dispatch. Give the broker the ingredient list and proposed labels rather than relying on the supplier's general description of mushroom seed. For organic imports, ask the approved control body to confirm the product's eligibility.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For repeat volumes, see container programmes.