Classification
Product TypeRaw Material
Product FormRaw, in-shell (dried)
Industry PositionPrimary Agricultural Product
Raw Material
Market
Raw walnuts in shell are a major export-oriented nut crop for Chile, supplying Northern Hemisphere markets counter-season. Chilenut positions Chilean walnuts around an April–May harvest window and continuous weekly shipments across the year from stored/dried inventory. Production is concentrated in Central Chile, including the Metropolitan, Valparaíso, O’Higgins and Maule regions. ProChile has described Chile as the world’s second exporter of in-shell walnuts, with European and South/Southwest Asian markets among key destinations.
Market RoleMajor producer and exporter (in-shell walnuts)
Domestic RoleExport crop within Chile’s fruit/nut sector
Market GrowthGrowing (Jan–Aug 2025 vs Jan–Aug 2024 (export value, nuts category))recent export value growth reported
SeasonalitySouthern Hemisphere harvest concentrated in April–May; export shipments are marketed as available year-round from storage and staggered dispatch.
Specification
Primary VarietyChandler
Physical Attributes- Kernel color (e.g., extra-light/light) and cracking yield are highlighted quality attributes for Chilean walnuts.
- In-shell walnuts are commonly sized/graded by diameter classes under buyer programs.
Compositional Metrics- Post-drying moisture/water-activity control is a critical parameter for stored tree nuts to limit mold growth and aflatoxin risk.
Grades- Buyer specifications commonly distinguish natural vs bleached shells and size classes for in-shell walnuts.
Packaging- Export packaging should protect walnuts from added moisture; avoid temperature fluctuations that can cause condensation and localized mold risk during transport.
Supply Chain
Value Chain- Orchard harvest → hulling/cleaning → drying → sorting/sizing → packing → SAG inspection/certification → containerized export shipment
Temperature- Good storage/transport practice for tree nuts emphasizes keeping product dry and avoiding temperature fluctuations that can cause condensation and mold growth.
Shelf Life- Quality and safety are sensitive to post-drying moisture control; failures increase risk of mold/mycotoxins and rancidity during long storage and transport.
Freight IntensityMedium
Transport ModeSea
Risks
Climate HighWater scarcity and drought conditions affecting key Central Chile fruit regions can reduce walnut yields and disrupt export supply reliability.Diversify sourcing across regions and orchards; prioritize irrigation-efficiency investments and water-risk screening in supplier qualification.
Food Safety MediumTree nuts are exposed to mold and aflatoxin risk if drying, storage, and transport allow moisture buildup or condensation; this can trigger destination-market rejections or intensified controls.Apply Codex-aligned good storage practices: tight post-drying moisture control, clean/dry transport, and routine sampling/testing programs for mycotoxins where relevant.
Regulatory Compliance MediumIf a shipment does not meet destination phytosanitary requirements, SAG cannot certify it as compliant for export, or the shipment may be rejected on arrival if requirements changed or were misapplied.Use SAG’s destination-requirement tools and confirm the latest importing-country NPPO requirements before packing; run pre-shipment document and additional-declaration checks.
Logistics MediumOcean freight disruptions and rate volatility can materially affect landed competitiveness and delivery reliability to Chile’s distant key walnut markets.Lock space early around post-harvest export peaks, diversify carriers/routes, and align inventory planning to buffer transit-time variability.
Sustainability- Water scarcity and climate pressure in Central Chile irrigation basins can raise production costs and reduce yields for walnut orchards.
- Irrigation efficiency (e.g., drip irrigation) is an important adaptation theme in key fruit-growing regions where walnut plantings are significant.
FAQ
When is Chile’s in-shell walnut harvest season?Chilenut describes Chile’s walnut harvest as occurring between April and May, reflecting Southern Hemisphere seasonality.
Which Chile regions are commonly cited as major walnut-producing areas?Government catastro reporting and related summaries highlight Central Chile regions with significant walnut area, including the Metropolitan Region, Valparaíso, O’Higgins, and Maule.
Which official authority issues phytosanitary certificates for exporting walnuts from Chile?Chile’s Servicio Agrícola y Ganadero (SAG) is the official body that issues international phytosanitary certificates for plant-product exports when shipments meet the importing country’s requirements.