|'Cardinale' is a French Crisp/Batavia Lettuce generally ready for harvest in 48 days. This is an excellent variety for the summer, as it grows well in heat. Plant grows into thick, dark, red leaves with an upright habit and little trouble with bottom rots. Start from seed 4 to 6 weeks before average last frost date. Sow seeds 1/4 inch deep in wide rows and thin to 8 to 12 inches apart. Thinned seedlings can be replanted. Keep soil moist but not soggy. Protect from rabbits and slugs. Extend the harvest season by planting successive crops. Summer heat causes lettuce to bolt. Pick outer leaves as they grow or harvest all at once. Harvesting when weather or day temperature is cooler will result in crisper leaves. Do not harvest lettuces until you are ready to use it.