Perspectives on food safety differ in Europe compared to the United States. Shifting trends may inspire farmers to grow more protected crops rather than open field vegetables. Hydroponic lettuce is a case in point.
Inclement weather, food recalls and widening trade gaps contributed to a 19-year low in the production of fresh vegetables in the U.S. in 2018. Onions, head lettuce, romaine lettuce and tomatoes accounted for much of the decline.