The unit is inexpensive and easy to construct. The cover is a clear UV-resistant polythene film.
This greenhouse is ideal for those areas which suffer just enough winter frosts to be annoying.
Where to position the greenhouse
Pick a site likely to get the winter sun. The site should not be in a possibly boggy area and should be level or in a place that is easy to make level. If the site is below a hill or slope, then it might be necessary to put in a drain (open, tile or scoria) to redirect any water flow away from the greenhouse site.
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