252 Gardening 
some of the smaller sorts resemble Cos lettuce in habit of 
growth. Undoubtedly varieties will be found or de- 
veloped that are suited to various conditions and needs 
in the United States. The beginner can grow good 
crops from the seed of any of those varieties that may 
now be bought from seed firms. 
Head lettuce. In some localities having moist and 
somewhat prolonged cool weather in spring, excellent 
head lettuce may be grown from seed sown early in the 
field. Much commercial head lettuce, especially of the 
Salamander variety, is 
thus grown in the market 
gardens on Long Island. 
In most home gardens, 
good head lettuce can be 
grown best in the spring 
by the transplanting 
method. In many if 
not most sections, heads 
will form only if special 
attention is given to 
every step in the grow- 
ing of the crop so that 
a vigorous, rapid, and 
continuous growth is 
maintained during the 
cool weather of spring. 
‘ Give seedlings plenty of 
Fic. 140. Head lettuce, that was grown TOOM in flats (space them 
out-of-doors in the fall, being set out in gt least 3 inches apart) 
a cold frame at the approach of cold , 7 
weather. in order to obtain stocky 
