Market
South Korea is an import-dependent walnut market with limited domestic production and strong consumer demand for tree nuts. Domestic cultivation exists in a few foothill and forest-farm regions, but imported walnuts dominate year-round supply, led by U.S. origin product. Korean demand is driven by health-oriented snacking, bakery use, and gift-pack retail channels. The main trade risks are origin concentration, quarantine compliance, and quality loss during long sea transit.
Market RoleImport-dependent consumer market
Domestic RoleLimited domestic production, mainly supplementary to imported supply
Market GrowthGrowing (medium-term)steady import-led expansion
SeasonalityDomestic harvest is concentrated in autumn, but imported walnuts make supply available year-round.
Risks
Market / Price Volatility HighSouth Korea relies heavily on imported tree nuts, with the United States holding roughly 87% of imported tree-nut market share in 2024 and walnuts among the leading categories, so California crop shocks or U.S. export disruptions can tighten supply and raise prices quickly.Diversify origin sourcing, lock forward coverage early, and maintain safety stock.
Regulatory Compliance MediumImported walnuts can be delayed or rejected if APQA phytosanitary requirements or MFDS import-declaration details do not match the shipment, especially for in-shell product and first-time origins.Pre-clear documents and confirm origin-specific quarantine rules before shipping.
Food Safety MediumShelled walnuts are vulnerable to rancidity, moisture uptake, and contamination during long storage or transit, and MFDS can apply document review, sampling, and laboratory testing at entry.Use dry packaging, temperature control, and pre-shipment quality testing.
Logistics MediumWalnuts move mainly by sea, so port congestion, container delays, and heat exposure can reduce kernel quality even though the product is less perishable than fresh produce.Use humidity control, stable routing, and fast warehouse turnover.
Sustainability / Climate MediumBecause Korean supply is concentrated in a few source origins, drought, wildfire, or harvest variability in those orchards can rapidly show up in Korean availability.Diversify origins and maintain multi-month inventory coverage.
Sustainability- Supply concentration in a few origin countries makes climate and water stress relevant to Korean buyers
- Retail packaging waste from nut snack and gift formats
- Long-distance sourcing increases the carbon footprint of landed supply
Labor & Social- Worker safety in orchard harvesting and shelling facilities remains relevant in source countries
- Supplier labor due diligence is important because Korean buyers rely on imported supply chains
Standards- GLOBALG.A.P.
- HACCP
- BRCGS
- ISO 22000
FAQ
Is South Korea mainly a producer or importer of walnuts?It is mainly an import-dependent consumer market. USDA's 2025 tree nut brief says Korea has limited domestic production and that the U.S. dominated imported tree nuts in 2024.
What paperwork matters most for walnut shipments into Korea?An APQA phytosanitary certificate is required for imported plant products, and MFDS requires import declaration and inspection for food imports. A certificate of origin matters when the shipment claims an FTA preference.
Where are walnuts grown domestically in Korea?Domestic production is concentrated in foothill orchard areas such as Yeongdong, Cheonan, Gimcheon, and Hamyang, with harvest typically in late September through mid-October.