ROUGE DE HIVER (Red of Winter) displays striking red-brown, flat, smooth leaves with green veins that form a distinctive, loose Romaine head that has good cold tolerance. Rouge d'Hiver lettuce seeds are a very old heirloom variety, it is listed in Vilmorin's The Vegetable Garden (1885) as a hardy, productive plant that is slow to bolt. Rouge d'Hiver lettuce seeds are a favorite for market gardeners and home gardeners alike. Superb flavor and unusual ability to stand up to whatever the weather throws its way. 600+ Seeds per order. lactuca sativa Full sun. Early spring, soil temp 35F+ or Fall, soil temp below 75F. SOW 1/8" deep, 3"apart. Keep moist. Germination 7-14 days. Thin to 9". Height 12" x 9" Wide. Medium water. Days to maturity 70. Pick outside leaves anytime. Baby leaves about 30 days.