Classification
Product TypeRaw Material
Product FormRaw (in-shell or shelled; fresh or dried)
Industry PositionPrimary Agricultural Product
Raw Material
Market
In Mexico, common walnut is marketed as “nuez de Castilla” (Juglans regia) and is closely tied to seasonal fresh-kernel demand for dishes such as chiles en nogada. Domestic production is concentrated in central states (notably Puebla and the Sierra Nevada zone) and is described as largely traditional, family-based and small scale. At the same time, Mexico participates in substantial two-way trade under HS 080231 (in-shell) and HS 080232 (shelled), with the United States the dominant partner in reported 2023 import flows. Market access and shipment continuity depend heavily on meeting SENASICA phytosanitary import measures and Mexico’s prepackaged food labeling requirements when kernels are sold retail.
Market RoleActive two-way trader (importer and exporter) with niche, seasonal domestic production of “nuez de Castilla” (Juglans regia); trade flows are strongly linked to the United States.
Domestic RoleSeasonal culinary ingredient and specialty nut for domestic consumption, especially during the July–September chiles en nogada season.
SeasonalityFresh “nuez de Castilla” availability peaks in July–September, aligning with the chiles en nogada season; outside this window, supply relies more on stored/dried product and imports.
Specification
Primary VarietyNuez de Castilla (Juglans regia)
Supply Chain
Value Chain- Orchard harvest → dehusking/cleaning → drying (for storage) → cracking/shelling (where applicable) → wholesaler/importer → retail & foodservice
- Seasonal fresh kernels for nogada applications are typically marketed rapidly during the July–September window in central producing areas.
Temperature- Control moisture through drying and maintain dry, cool storage to limit mold growth and quality deterioration (Codex tree-nut guidance).
Shelf Life- Storage breaks and excess moisture increase mold and mycotoxin risk; preventive practices emphasize good drying, handling, and storage (Codex/WHO mycotoxin guidance).
Risks
Phytosanitary HighMexico can enforce origin- and commodity-specific phytosanitary import measures for walnuts via SENASICA, and those measures may be updated immediately during a phytosanitary emergency; non-conforming consignments can face holds, required treatments, or refusal at entry.Confirm current SENASICA import measures for the exact walnut product form and origin before shipment; pre-validate documentation and any required conditions with the importer/broker.
Food Safety MediumTree nuts can be contaminated with mycotoxins (including aflatoxins) when drying and storage are inadequate; buyer testing failures can trigger rejection, delisting, or recall risk.Apply GAP/GMP/GSP with strong moisture control and segregation, and use a mycotoxin monitoring/testing program aligned to buyer requirements and Codex guidance.
Agronomy MediumTraditional “nuez de Castilla” production in central Mexico is reported to face walnut pest pressure, yield declines, and high production costs, increasing local seasonal supply vulnerability.Strengthen orchard IPM, post-harvest handling, and producer technical support; use diversified sourcing (stored and imported supply) to smooth seasonal shortfalls.
FAQ
Where is Mexico’s domestic “nuez de Castilla” production concentrated?Published Mexican sources describe “nuez de Castilla” (Juglans regia) production as concentrated in central states, notably Puebla (including the Sierra Nevada zone), as well as Tlaxcala, Estado de México, Oaxaca, and Querétaro.
When is fresh “nuez de Castilla” typically harvested for the chiles en nogada season?Mexico’s Secretaría de Agricultura y Desarrollo Rural notes that chiles en nogada are served in July, August, and September because key ingredients—including “nuez de Castilla”—are harvested during those months.
What is the key SPS compliance step for importing raw walnuts into Mexico?Use SENASICA’s Phytosanitary Requirements Module to confirm the current, origin-specific import measures for the walnut product form being shipped and ensure the required phytosanitary documentation and any specified conditions are met before arrival.