48 VEGETABLE GROWING PROJECTS 



The tomato seedlings should be kept in the hotbed until they 

 are four or five weeks old and then transplanted, utilizing all of 

 the hotbed as well as the cold frame. 



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Fig. 4. — Cold frame well ventilated ; board fence constructed for windbreak. 



1. Where will you locate the cold frame ? 



W-VG : 14. L : 58. 



2. How will you construct the frame ? 



W-VG: 114-117. L: 66. C: 55-57. 



3. How will you prepare the soil? W-VG: 117. 



4. Estimate material required to build the cold frame for your 



tomato project. 



7. Making plant boxes. — When hotbeds and cold frames are 

 employed in the starting of early vegetables, plant boxes, com- 

 monly called " flats," are practically indispensable. They are so 



