LEADING VEGETABLE CROPS I55 



crop with a number of other garden vegetables. It 

 is very common to plant the cucumber with lettuce 

 and radishes. The planting is usually done about 

 the time these crops are being harvested. They are 

 sometimes started with early beets, carrots and 

 various other plants. An excellent practice in the 

 North is to follow the early peas with cucumbers 

 for pickle purposes. 



The growing of cucumbers under glass has come 

 to be a very large and important industry in many 

 sections of the country. Under the influence of 

 field and forcing conditions, special tjrpes have been 

 developed, commonly known as the English and 

 American types. 



The English type has been developed almost en- 

 tirely under greenhouse conditions where the 

 climate was such as to prevent their growth out of 

 doors successfully. This type has never become 

 popular in the United States and is rarely grown. The 

 larger part of the cucumber crop in this country is 

 grown out of doors, hence the development of what 

 has been known as the field type. 



This type, however, gives splendid satisfaction 

 under forcing conditions, and in this country is 

 preferred to the English type. Soil conditions under 

 glass are practically the same as that in the field. 

 The chief difference, after all, is that moisture and 

 temperature conditions are under almost perfect 

 control, making it possible to grow these plants out 

 of season and have them ready for market before 

 it would be possible to even start them out of doors. 

 The cucumber is usually grown as a succession crop 

 after lettuce in the greenhouse. The latter crop 

 requires low temperatures while the cucumber requires 

 higher tCBBperatures. After the warm days of late spring 



