Market
Fresh scallion (green onion; often sold as bunched green onions/"cebolla en racimos" or "cebolla cambray") in Mexico is produced for both domestic fresh use and export-oriented channels. Trade statistics for HS 070390 ("leeks and other alliaceous vegetables, nes") show the United States as the dominant export destination for Mexico, and export activity is concentrated in a few Mexican states. For U.S.-bound trade, buyer specifications commonly reference U.S. grade language for common green onions and require strong cold-chain discipline due to high perishability. Food-safety history (notably hepatitis A outbreaks linked to Mexican-grown green onions in U.S. investigations) makes preventive controls and traceability central to market access.
Market RoleProducer and exporter (notably U.S.-oriented cross-border fresh supply; scallions may be reported under HS 070390 and/or onion subheadings depending on customs practice)
Domestic RoleFresh culinary vegetable used domestically and as an export-oriented specialty crop for North American markets
SeasonalityYear-round production is feasible in key producing areas, with planting windows varying by region and cultivar; export availability is supported by staggered production across climates.
Risks
Food Safety HighHepatitis A outbreaks in the United States have been associated with consumption of foods containing fresh green onions, with traceback investigations identifying Mexican-grown green onions as the likely source in 2003; recurrence risk can trigger rapid buyer delisting, enhanced inspections, or import alert scrutiny for implicated supply chains.Require documented preventive controls across water, worker hygiene/health, field sanitation, and packing operations; implement lot-level traceability and supplier verification aligned with FDA Produce Safety expectations and importer FSVP requirements.
Regulatory Compliance MediumCommodity- and origin-specific U.S. admissibility conditions (APHIS ACIR) and destination requirements can change or be misapplied; missing or incorrect phytosanitary/export certification or failure to meet specified conditions can lead to delays, holds, or refusal at entry.Validate the importer’s ACIR checklist before harvest; align SENASICA export certification steps and documents to the buyer’s entry requirements; run pre-shipment document reconciliation (names, lot IDs, origin, quantities).
Logistics MediumFresh scallions/green onions are highly perishable; temperature abuse, dehydration, or border delays can rapidly cause yellowing, decay, and quality claims or rejection, especially if cold-chain targets near 0°C and very high humidity are not maintained.Use rapid cooling and water-loss control (e.g., appropriate liners/icing where commercially used), maintain near-0°C setpoints, and plan border timing/contingencies to avoid dwell-time spikes.
Trade Policy MediumPreferential duty treatment and exposure to additional tariff measures can depend on meeting USMCA origin requirements and making a valid claim; documentation or origin-qualification errors can create unexpected landed-cost shocks.Maintain origin substantiation and USMCA minimum data elements on commercial documents when claiming preference; coordinate broker review before entry.
Labor & Social- High hand-labor and handling intensity in harvest and preparation elevates the importance of worker health screening, hygiene, and sanitation controls; U.S. outbreak investigations have identified Mexican-grown green onions as a likely source in major hepatitis A outbreaks.
FAQ
What storage conditions best preserve fresh scallion (green onion) quality during distribution?Postharvest guidance for green onions cites an optimum storage temperature of 0°C (32°F) and very high relative humidity (>98%). Under optimal conditions at 32°F, green onions can remain fresh for up to about 4 weeks, while at 10°C (50°F) storage life is typically about 7–10 days; packaging approaches like package-icing and perforated liners are used to limit water loss.
Which quality grades are commonly referenced for bunched green onions in U.S.-oriented trade?USDA AMS publishes grade standards for “Common Green Onions,” including U.S. No. 1 and U.S. No. 2. These grades emphasize fresh green tops, firmness, trimming, freedom from decay and damage, and include typical size parameters such as overall length (roots excepted) not less than 8 inches and diameter ranges (tighter for U.S. No. 1 than U.S. No. 2).
Why is food safety considered a critical risk for Mexican-grown green onions/scallions entering the U.S. market?CDC’s 2003 investigation of a large hepatitis A outbreak linked illness to foods containing fresh green onions and reported traceback findings indicating the green onions were grown in Mexico. This history means buyers and importers often apply heightened preventive-control, verification, and traceability expectations for scallion/green-onion supply chains to reduce outbreak and enforcement risk.
What documents and systems matter most for phytosanitary clearance and U.S. import compliance?On the Mexico side, SENASICA issues the International Phytosanitary Certificate for exports of regulated plant-origin products after meeting the destination country’s requirements. On the U.S. side, APHIS points importers to the ACIR database to determine commodity- and origin-specific import conditions and any required treatments, and CBP guidance notes USMCA preference claims do not require a specific form but do require minimum origin-certification data elements when claiming preferential treatment.