Before we begin exploring what greenhouse gardening is all about; it is important for you first to know a little history behind the building, which we now call the greenhouse. You will read about some of the major developments in agriculture and backyard farming that eventually led to the use of heat, humidity, and sunlight penetration in a controlled area for forced planting. Now, you do not need to worry. This brief history lesson will not be full of technical terms or strange-sounding jargon. Relax, enjoy reading about the history of the greenhouse, and how gardening in such an enclosed place came to be.