CtJCUMBERS 



243 



In other respects the treatment is the same as that for cucumbers 

 in forcing houses. It is the common practice to plant only a single 

 row of cucumbers through the cold frame, making the hills at in- 

 tervals of 2 or 3 feet through the center of the continuous frame. 

 Such frames are made of boards about 1 2 inches high at the back 

 and about 8 inches high at the front, which are held in place by 

 stakes driven in the ground or by cleats used as guides for the sash. 



FIG. 89. The methods of arranging frame sash to avoid drafts and still secure 

 ample ventilation 



In length these frames are multiples of 3 feet, the size in each 

 case depending upon the area which is to be occupied. The con- 

 struction and arrangement of such frames is illustrated in figure 12. 

 Watering and ventilating. Special attention to the ventilation of 

 the frames and to the application of water is necessary to prevent 

 disease and keep the plants in a healthy, rapidly growing con- 

 dition. To facilitate the work of watering or irrigating plants in 

 cold frames, pipes can be arranged upon the surface of the ground 

 or at a convenient height overhead, so as not to interfere with cultiva- 

 tion, from which water can be drawn to sprinkle the surface of the 



