Polyethylene film

Polyethylene Film
Polyethylene film is a quick and inexpensive option for gardeners who use their greenhouse mainly for seed starting. It comes in sheets that can be used in single or double layers, for better insulation.

Polyethylene film is the least expensive greenhouse covering and may be installed in a single or double layer. If you use a double layer, you'll need to blow air blown into it.

Synthetic mulches such as black polyethylene film or the commercially available 'weed blocker' mulches are also effective methods of weed control.

Glass will need more support than polyethylene film or fiberglass. While glass is the most attractive, it also tends to be the most expensive. Building a greenhouse out of reclaimed windows, often discarded for garbage, is an economical choice.

Apply moist, not wet, sphagnum moss around the area of the cut and fasten it in place with a piece of polyethylene film (plastic sandwich bags work well).

Attaching PVC hoops to the sides of the bed means you can throw clear polyethylene film over the bed to raise soil and air temps to start plants earlier in the season or extend the season into fall.

Attics should be ventilated, crawl spaces covered with 3 or 4 mil polyethylene film and the area properly vented.

While it is true that bamboo won't crack concrete, it will push up through asphalt paving or between bricks or flagstones that aren't laid in cement. It also goes through black polyethylene film like it isn't even there.

See also: Polyethylene, Ethylene, Light, Water, Plant