Severe flooding in the Salinas Valley, a major lettuce production area in California, is expected to cause a significant increase in lettuce prices next month, potentially maintaining high prices through the summer. The flooding, coupled with below-average temperatures, has led to extensive crop damage and delays in planting. This situation is exacerbated by previous disease outbreaks in the region's lettuce crops, which have already resulted in severe shortages and high prices. John Bishop, a produce distributor, and Mark Shaw, from a cooperative, highlight the serious impact of the extreme weather and cold temperatures on farmers in the area.