1000 Seeds -Miner's Lettuce, Claytonia Perfoliata, Cold-hardy salad green ! 1000 Seeds -Miner's Lettuce, Claytonia Perfoliata, Cold-hardy salad green ! A must-have for the herb garden is Winter Purslane, and it's so easy to grow from herb seeds! Other names are Indian Lettuce and Miner's Lettuce which was given to the herb plant because it was eaten in great quantities as a salad green during the gold rush years. It is rich in Vitamin C so it helps prevent scurvy, and it is a native to the west coast of North America and was in great supply in the winter months. The Winter Purslane plant is considered to be both a medicinal herb as well as a culinary herb, and it is so easy and rewarding to grow!