SASH-BED CONSTRUCTION 



19 



Fig. 4. Plan for permanent hotbed 



even with the top, 3 feet apart, to serve as 

 rests for the sash and to keep the frames 

 from spreading. The sides and ends of the 

 frame are well banked with fresh manure to 

 conserve the heat. If the plants are to 



5. Permanent hotbed of concrete with cast-iron sills 



be grown in flats instead of directly in the 

 soil, 2 inches of soil over the manure will be 

 sufficient. If the plants are to be grown in 

 the soil it should be 4 or 5 inches deep. 



