An outbreak of cyclosporiasis in mid-2023 has significantly shifted consumer purchasing patterns for leafy greens in the United States, with local and greenhouse-grown lettuce experiencing a surge in demand. The outbreak, which caused a decline of more than 20 percent in prepackaged salad sales at major grocery and retail chains during July, prompted many consumers to turn toward smaller, local producers perceived as safer sources.

At Oliver’s Produce, a family-owned farm in upstate New York, sales of lettuce more than doubled compared to the previous July, reaching 1,500 heads sold. Co-owner Sawyer Oliver reported that local demand increased so rapidly the farm sold out ahead of schedule, attracting interest from both individual consumers and local restaurants. This trend reflects a broader movement by buyers away from large-scale industrial farm produce during the health scare.

Similar experiences were reported by other small growers, such as John Warner, who operates 520 Greens, a hydroponic farm in Tucson, Arizona. Warner, who sells at farmers’ markets, noted that he sold out nearly three times faster than usual, with customers lining up to buy his locally grown varieties. His business, focused on soil-free methods inside a small greenhouse, is preparing to expand to supply local restaurants, a move accelerated by the outbreak’s impact on consumer preferences.

Part of the shift is fueled by concerns over the safety of conventionally grown lettuce. Some consumers, like shopper Ms. Sun, expressed distrust in traditional suppliers and government assurances about food safety, instead opting for greenhouse-grown lettuce brands such as Little Leaf Farms. Founded by Paul Sellew, Little Leaf Farms grows leafy greens in controlled indoor environments on the East Coast and experienced an initial dip in sales due to the outbreak but saw a recovery after engaging customers through social media campaigns emphasizing their pathogen-free growing methods.

Local produce organizations have also noted increased interest and sales. The Triangle United Growers cooperative in North Carolina reported a 30 percent rise in local farmers’ market sales and a 20 percent increase in produce box subscriptions during July. Members have received numerous inquiries about their growing and safety practices as consumers seek transparency amid concerns related to the outbreak.

Despite the spike in sales and consumer interest in local and greenhouse produce, industry leaders acknowledge uncertainty about whether these changes will persist once the cyclosporiasis outbreak subsides. Sellew of Little Leaf Farms anticipates some reversion to previous buying habits but remains optimistic that exposure to safer alternatives will sustain a portion of the increased demand. Similarly, Oliver hopes that consumers, once experiencing the quality of local lettuce, will continue to seek it out despite the convenience of supermarket shopping.

The outbreak has thus highlighted vulnerabilities in the large-scale produce supply chain while providing an economic boost to smaller, local growers and alternative farming methods, underscoring evolving consumer attitudes toward food safety and sourcing.