Good heat tolerance. The large, fancy, bright red heads make a stunning presentation. Suitable for spring, summer, and fall crops. Better heat tolerance and brighter red color Packet: 30 seeds. Days to Maturity or Bloom: 48 CULTURE: Lettuce is hardy and can be planted as early as the soil can be worked. It is a cool weather crop and makes its best growth at temperatures of 60-65°F (16-18°C). Careful variety selection is important for hot weather crops. Sow every 3 weeks for a continuous supply of fresh lettuce.