Book excerpt: This professional horticulture reference, which has been in print continuously since 1932, is fully revised and updated in this new edition. Based on real-life experiences from industry professionals including growers and equipment and greenhouse manufacturers, the presented information covers all aspects of greenhouse equipment -- the structures themselves, benches, irrigation, curtains, environmental controls, machination, and the greenhouse as a retail facility. The most recent developments in greenhouse evolution are discussed, as are the varieties of available greenhouse structures, from free-standing and gutter-connected greenhouses to shade houses and open-roof greenhouses. Information on the business side of managing a greenhouse is provided, including how to market products and how to operate a retail store from a greenhouse.