1. Greenhouse Site Selection
Mrs. Molitor

2. Objectives
 Identify factors needed for green house
selection
 Define greenhouse structures
 Identify the major types of greenhouses
 Illustrate the structural parts of a
greenhouse
 Identify different transparent covings used
on a greenhouse

3. Factors to be considered when
determining greenhouse location:
 Market for the crop
 Accessibility
 Topography and drainage
 Water and other utilities
 Zoning regulations
 Labor supply
 Expansion

6. Types of Attached Greenhouses
 Lean-to
 Attached even-span
 Window mounted

7. Free Standing Greenhouses
 Even-span
 Uneven-span
 Gothic arch
 Quonset

8. Connected Greenhouses
 Gutter connected
 Ridge-and-furrow

9. Types of Structures
 Metal
 Advantages:
 Long Lasting
 Disadvantages:
 Higher initial cost
 Wood
 Advantages:
 Initial cost is relatively low
 Disadvantages:
 Doesn’t last as long

10. Greenhouse Coverings
 Glass
 Advantages: best light transmission, long
lasting
 Disadvantages: high cost, does not hold heat

11. Greenhouse Coverings
 Rigid plastic
 Advantages: light weight, easy to install,
excellent heat insulating ability, lasts average
15-20 years
 Disadvantages: high cost

12. Greenhouse Coverings
 Polyethylene
 Advantages: low cost, low fuel cost, readily
available
 Disadvantages: short life

13. Today we…
 Identified factors needed for green house
selection
 Defined greenhouse structures
 Identified the major types of greenhouses
 Illustrated the structural parts of a
greenhouse
 Identified different transparent covings
used on a greenhouse

14. Summary of the Day
 Greenhouses are clear,
transparent structures
that artificially
control the
environment to grow
many horticultural
crops. The uses of
these facilities is vast
but not always
apparent to the public.