Market
Raw walnuts in shell in Mexico are supplied by a mix of seasonal domestic production of nuez de Castilla (Juglans regia) and imports for year-round availability. Academic sources describe domestic production concentrated in central states (notably Puebla and Estado de México) with harvest timing from late July into early September depending on the region. Trade data for HS 080231 indicates Mexico’s in-shell walnut imports are dominated by the United States in recent reporting years. Importers must manage SENASICA phytosanitary compliance, where requirements can be updated during phytosanitary emergencies, and commercial quality expectations commonly reference dryness, shell integrity, and defect tolerances.
Market RoleNet importer with seasonal niche domestic production (nuez de Castilla)
Domestic RoleSeasonal domestic supply for traditional cuisine and bakery/confectionery use; limited local orchard production in central states
SeasonalityDomestic nuez de Castilla harvest is late summer (late July through early September), with regional timing differences between Estado de México and Puebla; imports support availability outside the peak domestic season.
Risks
Phytosanitary HighNon-compliance with SENASICA phytosanitary import requirements (including any emergency updates) can trigger shipment holds, re-export, or destruction, creating immediate supply disruption risk for in-shell walnuts entering Mexico.Use SENASICA’s Phytosanitary Requirements Module to confirm current measures for the specific origin and ensure the phytosanitary certificate, packaging, and any required treatments match the listed conditions before dispatch.
Tariffs MediumTariff exposure can be material for non-preferential origins: SIAVI lists a 20% MFN (NMF) tariff for fracción 08023101, while preferential treatment may apply for certain partner countries under FTAs when origin/procedural requirements are met.Validate the correct tariff line and preference eligibility in SIAVI for the exact product form and origin, and ensure certificate-of-origin and origin procedures are correctly implemented when claiming preference.
Logistics MediumMexico’s import supply is heavily U.S.-linked in HS 080231 trade reporting, making cross-border land logistics a key dependency; border delays and transport volatility can raise landed cost and increase quality risk if dry storage integrity is compromised.Build scheduling buffers for border clearance, specify dry/clean transport and packaging controls in contracts, and use pre-arrival documentation checks to reduce inspection-related delays.
Quality MediumCommercial standards emphasize dryness and freedom from mold, rancidity, and insect damage; quality failures can lead to buyer rejection, claims, or rework costs in Mexico’s retail and ingredient channels.Align purchase specs to UNECE class/defect tolerances (or U.S. grade for U.S. origin), require supplier QC evidence on dryness/defects, and maintain dry conditions through warehousing and distribution.
FAQ
When is the main domestic harvest season for Mexico’s nuez de Castilla (in-shell walnut)?Academic research on Mexico’s nuez de Castilla production reports a late-summer harvest window, generally from late July into early September, with some regional differences (for example, Estado de México maturing mid-July to late August and Puebla supply extending toward early-to-mid September in some channels).
Is Mexico mainly a producer or an importer of in-shell walnuts (HS 080231)?Mexico is a net import market for in-shell walnuts in HS 080231 trade reporting. WITS/UN Comtrade data for 2023 shows Mexico’s recorded imports of HS 080231 were sourced from the United States.
Where can an importer verify the phytosanitary requirements for bringing in-shell walnuts into Mexico?Mexico’s phytosanitary import measures for plant-origin goods are managed by SENASICA, which provides an online Phytosanitary Requirements Module to consult the applicable measures and notes that requirements may be updated during phytosanitary emergencies.