I was searching for information on greenhouses, and came across this article on the American Orchid Society website.
Here is an excerpt from the article.
Greenhouses run the gamut from elegant conservatories to compact window greenhouses that fit snugly into a kitchen window frame. Whatever the size, similar suggestions for selection, design and installation apply. There are three major types of greenhouses to consider. The lean-to greenhouse is usually small, about 6 to 10 feet long. One of its long sides is formed by the side of the house to which it is attached. Relatively inexpensive to make and maintain, its major drawbacks are a lack of space for an expanding collection and a tendency to heat up and cool off more rapidly than is desirable.
The attached greenhouse is an extension of one's home, connected at the narrow end rather than the long side, as with the lean-to greenhouse. It is generally large and thus capable of providing more reasonable control over humidity, ventilation and expansion problems. Some homeowners incorporate a living area into a lean-to or attached greenhouse.
The free-standing greenhouse is unattached on all four sides. It is the most expensive to construct but, aside from some inconvenience of access in inclement weather, it offers maximum light and the best control. Some space must be sacrificed for a work bench and storage area.
Visit as many orchid greenhouses as possible, and consult books on and manufacturers of greenhouses before making a final decision. Where space is limited inside the home, window greenhouses offer a prime space in which to cultivate small-growing orchids. Opt for a model with vents and small fans that enhance ventilation. Two or three shelves increase space; they may be solid, to prevent water from dripping on the plants below, or perforated to aid air circulation.
To read the full article, visit The American Orchid Society - https://www.aos.org/orchids/additional-resources/greenhouses.aspx
Have a great week,
Orchids In Print