138 UTILIZING THE GREENHOUSE IN SUMMER 



Of the egg plants, the varieties used were White Pearl, New 

 York Improved, Large Purple, Black Pekin, and Early Long 

 Purple. The last named gives the quickest returns and is 

 very productive. Of the other three varieties the New York 

 Improved, figure 56, is preferable. They averaged a return of 

 about 18 cents per square foot. 



SWEET POTATOES 



Have not been a success for some reason. The vines were 

 very prolific, but few potatoes set. The variety selected was 

 the " New Hardy Bush or Vineless," introduced by Johnson 

 and Stokes for the first time in 1897. 



POLE BEANS 



Are a reliable and quick growing crop for the forcing house in 

 summer when overhead space is available. Otherwise use the 

 dwarf varieties. The directions for growing are the same as 

 for other seasons of the year; these are given in Bulletin No. 

 62 of this station. 1 



SWEET CORN, 



Although it takes a longer time than many other crops, is well 

 adapted for growing in the forcing house in summer ; for 

 directions consult Bulletin No. 60, also of this station. 2 



CELERY 



Is a crop that can with proper care be grown at this season 

 of the year. Of a number of varieties tested none was 

 as successful as The Golden Self Blanching. Fig. 57 is a 

 photograph of three varieties, Early Arlington, Golden Self 

 Blanching, and White Plume. These were transplanted from 

 the seed trays into ground beds on April 29th, and their pho- 

 tograph was taken on July 4th, just 65 days from transplanting. 

 The plants were set six inches apart each way. There is little 

 trouble in growing celery at this time of year under glass, but 

 the difficulty comes in blanching it. It is on this account 



1 Forcing Pole Beans under Glass. 



2 Green Corn under Glass. 



