SEED GROWERS 



29 



LETTUCE 



Our lettuce seed is the standard of excellence throughout America and Europe — in fact, 

 wherever lettuce is grown. We are continuously carrying on extensive breeding operations to 

 maintain this standard and to develop such strains as the lettuce growing industry requires. 

 At present we are busily engaged with marked success in developing strains which are highly 

 resistant to disease as well as uniform and desirable in type and quality. 



In the following concise descriptions we have indicated the usual number of days required 

 by the varieties to produce heads in northern sections of the United States from seed sown 

 out of doors late in April or early in May. The number of days is not indicative of the time 

 required under best conditions for growth in the lettuce growing sections of California and 

 Arizona, but does indicate the comparative earliness of the varieties we list. Symbols: w. s. — 

 White Seeded; b, s. — Black Seeded. 



HEADING VARIETIES 



ALL YEAR ROUND, b. s. 



Very dependable; particularly popular with market gardeners because it forms 

 fairly good heads when the weather is so warm that most varieties fail. Head 

 globular, hard and buttery; of sweet, delicate flavor. 



BIBB, b. s 



A distinct, butter head, very dark green variety which has been popular in the 

 middle South for many years. Plant small forming a rather loosely folded head of 

 small size. Leaves thick, deep green slightly tinged or spotted with brown. Quality 

 excellent. Should be planted early as it bolts to seed readily in hot weather. 



BIG BOSTON (Trocadero) w. s 



Very popular in all parts of the world; known as Trocadero in Europe. Especially 

 valuable for summer and fall use out of doors, and for hotbed and cold frame 

 culture. It is a cabbage, butter-head type with glossy, plain edged leaves tinged 

 brown on the margins; forms a firm, well folded head, buttery-yellow at the heart, 

 and of excellent quality. 



Days 

 70 



57 



76 



