CONSTRUCTION OF COLD FRAMES 
ii 7 
tory material for this purpose. The end boards, held in 
place by cleats or other devices, may be removed and the 
soil of the frame cultivated in the manner shown in Fig- 
ures 22 and 23. The crossbars should be dovetailed in 
the side boards so they can be removed quickly. 
While portable frames are often used, they are not 
popular with extensive commercial growers. Portable 
frames may be dovetailed at the corners or held together 
by rods and bolts. They are usually made to accom- 
FIG. 25. CUCUMBERS IN COLD FRAME PLAT NEAR 
NORFOLK, VIRGINIA 
modate either two or four 3 x 6-foot sash. A double 
frame in use at the Missouri Experiment Station is 
shown in Figure 24. The outside of frames when used 
in cold weather should be banked with soil, manure or 
sod. Cloth covered frames, 12 to 14 feet wide, are in 
common use in the South and to some extent in North- 
ern sections for the starting of later plants. 
167. Soil of the cold frames. — When the frames are 
used only in starting plants in flats, the character of the 
soil is not considered. If used without flats, the greatest 
