Figures 19-6 through 19-9 show typical construction details for the major types of growing structures previously described and illustrated (Figures 19-1 through 19-5).
•Ground line
Heating cable
Sand or soil (2 in
figure 19-7. A typical hotbed (Courtesy United States Department of Agriculture)
figure 19-8. A typical lath house (Delmar/Cengage Learning)
Glass or hard plastic glazing
