CONSTRUCTION OF HOTBEDS 



107 



157. Sash. The most durable wood should be used in 

 making hotbed and cold frame sash. Cedar or cypress is 

 usually employed. Many of the old sash now in use were 

 made of white pine. However, it is a mistake to have 

 sash made of the softer woods at local factories which 

 do not make a specialty of this line of work. Sash differ 



FIG. 19. SASH FOR HOTBED OR COLD FRAME 



greatly in width and length, but the standard and most 

 popular size is 3 x 6 feet. Longer sash require wide 

 frames which are inconvenient in the daily care of the 

 plants. Sash vary also in thickness ; 2-inch lumber when 

 dressed makes a very strong sash, but it is more common 

 to use i ^/2-inch lumber, which planes down to ify. The 



