Greenhouse

3. A greenhouse covering that has the highest light transmission
4. plant reproduction, or making several plants from one plant
7. taking a piece of a stem or plant and rooting the stem
8. Very good material for hobby greenhouses or small custom designed houses
9. are usually sold in cell packs plants used for flower beds
11. substances that plants are grown in are called
14. very little maintenance is needed and the frames are strong and long lasting
15. Curved roofs; military hut-style

1. Rafters of equal length and Usually clears spans w/ truss supports
2. greenhouse just used for shielding plants from wind and very low temperatures
5. Good heat insulation. Good light transmission. Available in clear, corrugated single layer panels.
6. Cathedral arch-forward style Eliminates truss supports Adds a double layer of polyethylene covering
10. these black cloths are commercially available in weaves that black from 5 to 90 % of the sun
12. using a part of a plant instead of a seed only one parent needed for progation
13. Rafters of unequal length Usually used for hillside placement ADVANTAGES: maximizes sun light