The July/August, 2015, “Backwoods Home Magazine” (Issue #154) includes an article describing how Dorothy Ainsworth and her son Eric built one. An exerpt is below with a link to the full article.
Build a lean-to greenhouse
By Dorothy Ainsworth
Just thinking about a greenhouse can stimulate the senses. In our minds’ eyes, we can see the filtered light shimmering down on rows of greenery, feel the moist warm air, smell the rich soil, and even taste a juicy tomato.
A greenhouse is a protected and controlled environment that costs only a few hundred dollars if you build it yourself. Your first ripe tomato will cost $800, but it’s worth it — your greenhouse will allow 365 days of gardening a year. Summer and fall plants will yield for an extra season, and new seeds can gain a head start for spring planting. Frost, snow, rain, and wind can’t touch your precious plants and flowers, or you. You’ll get your initial investment back within a year, and then it earns its keep forever after.
Read the whole article here:
Excerpt used with permission of Backwoods Home Magazine.
You may also want a copy of Secret Greenhouse of Survival, by Rick Austin.