It’s been a choppy year for restaurants that lean into lettuce. Rising prices early in 2026 combined with a parasite outbreak have created a perfect storm of challenges for establishments that depend on fresh salads and greens as part of their core menus.
The troubles began on multiple fronts. Lettuce prices rose sharply in the first half of 2026 due to hot weather in Arizona, where about one-third of America’s lettuce is grown. The retail price of a pound of iceberg lettuce jumped nearly 20 percent between January and June. By late July, consumers were paying an average of 33 percent more for all fresh lettuce compared to a year earlier. At grocery stores, a head of iceberg lettuce averaged $1.86, up 25 cents from the previous year. Red leaf lettuce cost 52 cents more at $1.66, while a bunch of romaine commanded $2.49, a $1.55 increase.
Fuel costs have compounded the problem. The U.S. and Israel launched strikes on Iran, and Iran blocked most oil tankers from leaving the Persian Gulf, disrupting global energy supplies. Because lettuce is highly perishable and requires constant refrigeration from harvest to sale, elevated fuel costs directly raise transportation expenses. The expense of maintaining the cold chain is especially significant for an item that travels an average of 1,500 miles from farm to consumer.
Just when the industry was grappling with these mounting costs, a parasite outbreak emerged as an additional crisis. A cyclospora outbreak linked to shredded lettuce began in late June, sickening thousands of Americans. The parasite, Cyclospora cayetanensis, causes what has been dubbed “explosive diarrhea” and affected nine states: Illinois, Indiana, Kansas, Kentucky, Michigan, Ohio, Oklahoma, Pennsylvania, and West Virginia. Illnesses linked to contaminated lettuce at Taco Bell alone totaled 1,947 cases, with at least 98 people hospitalized nationwide and no deaths reported.
Federal health officials traced the outbreak to shredded iceberg lettuce supplied by Taylor Farms, a major produce supplier. On July 17, Taco Bell voluntarily removed the affected lettuce from all its U.S. restaurants. Taylor Farms issued a voluntary recall of all iceberg lettuce sourced from central Mexico.
The outbreak has devastated restaurant traffic. Taco Bell, which will likely see the biggest sales impact, experienced foot traffic that dropped by nearly 30 percent in some instances after the outbreak became public. As of July 23, Taco Bell visits were 21 percent lower than average across the U.S. Other chains with lettuce-heavy menus suffered as well. Visits to fast-casual restaurants like Cava, Chopt, Chipotle, Panera, and Sweetgreen all declined compared to their typical levels. Consumers, concerned about the parasite, are avoiding fresh greens and staying away from salad-focused establishments.
Sweetgreen, which operates 285 U.S. locations, stated that its food has not been connected to the current outbreak and emphasized that it follows rigorous food safety standards and can trace its ingredients from restaurant to farm. The company said in a statement that its own food safety experts are keeping a close eye on the situation. Other chains similarly declined to comment or emphasized their safety protocols.
The timing could hardly be worse. The industry was already struggling with higher ingredient costs and the challenge of maintaining expensive cooling systems during periods of elevated fuel prices. Now restaurants must contend with consumer wariness about the safety of lettuce, even when their particular supply chains were not involved in the outbreak.
Cyclospora infections cause watery diarrhea, fatigue, and loss of appetite. Symptoms typically begin about one week after infection, though they can appear anytime from two days to two weeks after exposure. Without treatment, symptoms can last from a few days to a month or longer. The parasite spreads through contaminated water or produce that has been exposed to human feces.
Federal authorities are still investigating the source of the contamination. While the main focus has been on Taylor Farms lettuce, officials have indicated that other brands, restaurants, retailers, or distribution channels may be identified. Investigators in North Carolina reported that fresh parsley and cilantro may be behind increased cases in that state.
For now, restaurants dependent on lettuce are navigating treacherous territory: managing inflated ingredient costs, dealing with consumer hesitancy, and adapting to supply disruptions. The combination of weather-driven price spikes, geopolitical fuel disruptions, and a significant foodborne illness outbreak has tested the resilience of establishments across the industry.