SOLANACEOUS CROP PROJECTS 



47 



but it is seldom that heat is provided, hence the name " cold 

 frame." Extensive commercial growers often heat their frames 

 with steam or hot water pipes, but in these instances the word 

 " frame " is more properly applied than the term " cold frame." 



Fig. 3.- 



-A well-oonstructed cold frame with narrow strips nailed on the cross 

 pieces. A small hotbed back of the cold frame. 



Cold frames, like hotbeds, should be located near the residence 

 and near water, and there should be as thorough protection as 

 possible from hard, cold winds. 



The ground should be graded level before the frame is placed. 

 This precaution is necessary from the standpoint of thorough and 

 uniform watering. 



If the tomato plants are to be set directly in the soil of the cold 

 frame, special care should be taken in the preparation of the soil. 

 (See page 63.) 



