Supermarkets ration lettuces as bad weather hits supplies
Frustrated customers have shared photographs of empty supermarket shelves on Twitter.
Meanwhile, some online shoppers have been told iceberg, romaine and sweet gem varieties of lettuce are completely out of stock.
Some Tesco and Morrisons branches are limiting sales of iceberg lettuces to three per customer because of "continued weather problems in Spain".
The vast majority of the UK's vegetables come from the city of Murcia in southeastern Spain during the winter months.
But severe flooding and freezing conditions have damaged farms across the region - causing millions of euros worth of damage and leaving the ground too soaked to grow new crops.
Price rises are possible if the weather does not improve soon, and some healthy eaters have already complained that the cost of an iceberg lettuce has nearly tripled in recent weeks.
Some supermarket chains have begun to buy in lettuces from US farms more than 5,300 miles away to address the shortage.
A Morrisons spokesman told the Daily Mail: "As a result of the fact that the Spanish harvest has been very difficult this year, we have just about enough coming in to supply our customers.