45 days.  This leaf-type lettuce, first introduced in 1973, is still tops for quality. The wavy, fringed leaves are a dark green color, tasty, firm and crisp. The plants are very slow to bolt. Leaves do not become bitter in hot weather, prolonging the harvest period.
                                        
                    
            
Growing Zone: 3 to 9
          
                              
            
Light Requirements: Full Sun