Classification
Product TypeRaw Material
Product FormFresh
Industry PositionPrimary Agricultural Product
Raw Material
Commodity GroupLeafy vegetables (salad greens)
Scientific NameLactuca sativa
PerishabilityHigh
Growing Conditions- Cool-season crop; quality is generally best under mild temperatures and can decline under heat stress (bolting and physiological issues).
- Requires consistent irrigation and well-drained soils; open-field systems can be vulnerable to drought and heavy rainfall events.
- Produced in both open-field and protected cultivation systems (including greenhouse and controlled-environment production) depending on region and season.
Main VarietiesCrisphead (Iceberg), Romaine (Cos), Butterhead, Leaf lettuce (green/red and oak-leaf types), Batavia
Consumption Forms- Fresh whole heads, hearts, or trimmed leaves
- Fresh-cut salad mixes and packaged leaves (minimally processed, refrigerated)
- Foodservice use in salads and sandwiches
Grading Factors- Head compactness/firmness for head types (e.g., crisphead/iceberg)
- Crisp, turgid leaves; absence of wilting and yellowing
- Freedom from decay, pest damage, and foreign matter
- Uniformity and size/weight appropriate to the commercial type
- No abnormal external moisture and no foreign smell and/or taste (per UNECE minimum requirements)
Planting to HarvestTypically about 30–70 days from planting to harvest depending on lettuce type, climate, and production system.
Market
Fresh lettuce is a highly perishable leafy vegetable traded mainly within regional corridors because quality depends on rapid cooling and an uninterrupted cold chain. Global production of the FAOSTAT category "lettuce and chicory" is concentrated in large horticultural producers such as China, the United States, India, Spain, and Italy. In international trade statistics for fresh/chilled lettuce (HS 070511 and HS 070519), Spain, the United States, Mexico, the Netherlands, and China are among the largest exporting countries. Major import markets include the United States and Canada in North America and Germany, the United Kingdom, and France in Europe, with commercial transactions commonly referencing UNECE FFV-22 quality classes and heightened microbiological food-safety expectations for leafy greens.
Major Producing Countries- ChinaAmong the largest producers in FAOSTAT's "lettuce and chicory" category.
- United StatesAmong the largest producers in FAOSTAT's "lettuce and chicory" category; also a major exporter in UN Comtrade HS 070511/070519.
- IndiaAmong the largest producers in FAOSTAT's "lettuce and chicory" category.
- SpainMajor producer and leading exporter in UN Comtrade HS 070511/070519.
- ItalySignificant producer and exporter in UN Comtrade HS 070511/070519.
- MexicoSignificant producer and major exporter in UN Comtrade HS 070511/070519 (notably into North America).
Major Exporting Countries- SpainAmong the top exporters in UN Comtrade HS 070511 (cabbage lettuce) and HS 070519 (other lettuce) in 2024.
- United StatesAmong the top exporters in UN Comtrade HS 070511/070519 in 2024 (large regional trade, especially with Canada).
- MexicoAmong the top exporters in UN Comtrade HS 070511/070519 in 2024; key supplier into the United States market.
- NetherlandsAmong the top exporters in UN Comtrade HS 070511/070519 in 2024; also functions as a European distribution hub.
- ChinaAmong the top exporters in UN Comtrade HS 070511/070519 in 2024, supplying regional Asian markets.
- ItalyAmong notable exporters in UN Comtrade HS 070511/070519 in 2024 within Europe.
Major Importing Countries- United StatesAmong the top importers in UN Comtrade HS 070511 and HS 070519 in 2024.
- CanadaAmong the top importers in UN Comtrade HS 070511 and HS 070519 in 2024.
- GermanyAmong the top importers in UN Comtrade HS 070511 and HS 070519 in 2024.
- United KingdomAmong the top importers in UN Comtrade HS 070511 and HS 070519 in 2024, with strong reliance on European supply.
- FranceAmong the top importers in UN Comtrade HS 070511/070519 in 2024 within Europe.
- ItalyA major importer in UN Comtrade HS 070511 in 2024 within Europe.
Specification
Major VarietiesCrisphead (Iceberg), Romaine (Cos), Butterhead, Leaf lettuce (green leaf, red leaf, oak leaf types), Batavia
Physical Attributes- Quality for head lettuces is closely linked to head compactness/firmness (overmature heads can have more postharvest problems).
- Bright light green color and crisp, turgid leaves are key visual and texture quality cues after trimming outer leaves.
- High susceptibility to dehydration/wilting makes high-humidity cold-chain handling important.
Grades- UNECE FFV-22 minimum requirements and quality classification (Class I, Class II) are commonly referenced in international trade.
Packaging- Whole-head lettuce commonly ships in ventilated cartons or reusable plastic containers (RPCs), often with size/count-based packing.
- Fresh-cut lettuce and salad components are commonly packaged under modified atmospheres (MAP) for browning control and shelf-life management.
ProcessingIntact crisphead lettuce is not generally benefited by CO2-enriched atmospheres and may show injury at elevated CO2, while cut lettuce for salad products is commonly packaged in low O2 and high CO2 atmospheres to slow cut-surface browning.
Supply Chain
Value Chain- Harvest and field trimming -> rapid cooling (vacuum cooling commonly used for iceberg/cabbage lettuce) -> cold storage near 0°C with high RH -> refrigerated transport -> wholesale/distribution -> retail/foodservice
- For fresh-cut formats: reception and inspection -> washing/sanitation -> cutting -> dewatering -> MAP packaging -> refrigerated distribution
Temperature- 0°C is a key target temperature for maximizing storage life of crisphead (iceberg) lettuce; high relative humidity (>95%) is important to limit wilting.
- Avoid freezing injury (risk increases below approximately -0.2°C for stored crisphead lettuce).
- Lettuce is highly sensitive to ethylene; ethylene management and segregation from high-ethylene commodities can reduce physiological disorders (e.g., russet spotting).
Atmosphere Control- Controlled atmospheres with low O2 (approximately 1–3%) at 0–5°C can provide some shelf-life benefit for crisphead lettuce by reducing respiration and limiting ethylene effects.
- Fresh-cut lettuce/salad pieces are commonly packaged under very low O2 and elevated CO2 atmospheres to control cut-surface browning (product-type specific).
Shelf Life- For crisphead (iceberg) lettuce, an indicative storage life of about 21–28 days is reported at 0°C with high RH under good conditions; shelf-life shortens substantially at higher temperatures.
Risks
Food Safety HighFresh lettuce and other leafy greens have a long history of association with microbiological hazards (including Shiga toxin-producing E. coli), and contamination incidents can trigger rapid recalls, border rejections, and demand shocks because the product is typically consumed raw and has a short shelf life.Strengthen preventive controls from farm through packing and processing: agricultural water management, hygiene and sanitation programs aligned to Codex CAC/RCP 53, supplier verification/audits, environmental monitoring for fresh-cut facilities, and rapid traceback capability (including compliance with relevant traceability rules in destination markets).
Cold Chain Integrity MediumTemperature abuse and low-humidity exposure during harvest, precooling, storage, or cross-border transit can rapidly reduce marketability through wilting, decay, and physiological disorders, leaving limited recovery time for importers and retailers.Use rapid precooling (e.g., vacuum cooling where appropriate), maintain near-0°C transport targets with high RH, minimize dwell times at borders/ports, and implement temperature logging through the logistics chain.
Regulatory Compliance MediumResidue limits, microbiological criteria, and labeling/traceability requirements vary by market, increasing the risk of shipment holds or rejections for exporters operating across multiple destination standards.Maintain market-specific compliance matrices (MRLs, microbiological criteria, labeling), perform pre-export testing and documentation checks, and verify buyer and authority requirements for fresh and fresh-cut categories.
Climate MediumHeat waves, drought, and extreme weather can reduce yields and quality and may shift supply availability from key open-field regions, increasing price volatility and tightening exportable surplus.Diversify sourcing across multiple climates and production systems (including protected cultivation), and align contracting to seasonal production windows and water-risk monitoring.
Sustainability- Water stewardship and irrigation reliability in major producing regions (open-field systems are exposed to drought and allocation constraints).
- Packaging waste and recycling challenges for fresh-cut lettuce and salad formats (films and bags).
Labor & Social- Seasonal and migrant labor dependence in harvesting and packing operations; worker health, safety, and welfare audit expectations are common in export supply chains.
FAQ
Which countries are among the largest exporters of fresh lettuce in global trade statistics?Based on UN Comtrade trade data for HS 070511 (cabbage lettuce) and HS 070519 (other lettuce), Spain, the United States, Mexico, the Netherlands, and China are among the largest exporting countries in recent reported years.
Why is strict cold-chain control important for fresh lettuce trade?Fresh lettuce loses quality quickly if it is not rapidly cooled and kept cold and humid throughout distribution. For crisphead (iceberg) lettuce, an optimum storage temperature around 0°C and high relative humidity are emphasized in postharvest guidance, and the product is also very sensitive to ethylene exposure.
What international quality standard is commonly referenced for lettuce in trade?UNECE Standard FFV-22 is commonly referenced for minimum requirements and quality classification (including Class I and Class II) for lettuces and related products moving in trade.