Parris Island Cos Romaine Lettuce
Parris Island Cos, introduced in 1952 and named after Parris Island, South Carolina, has steadily grown in popularity thanks to its resistance to tipburn, tolerance to mosaic, and medium-to-slow bolting habit. It forms 10–12 inch heads of slightly savoyed leaves with a creamy white heart, and a 2020 study identified it as one of the best romaines for keeping quality after leaves are cut.