A greenhouse is a building constructed chiefly of glass for the preservation of delicate plants. A greenhouse is sometimes distinguished from a hothouse by not requiring artificial heat during summer, and from a true conservatory in having the plants in pots and not in the ground. The lean-to form, in which advantage is taken of a house or garden wall as a support, is frequently used, but the growth of plants in such houses is one-sided, and the span or arch-roofed structures, with glass on all sides, are to be preferred. The materials used are chiefly glass, wood, and metal or plastic. Research Greenhouse
In architecture a lean-to is a roof having only one slope or pitch; or a shed or slight building placed against the wall of a larger structure and having a single-pitched roof. Research Lean-to
The Probert Encyclopaedia was designed, edited and programed by
Matt and Leela Probert
Abbreviations
Research Greenhouse
