A hotbed covered with a small glass cover (also called a hotbox) is used as a small version of a hothouse (heated greenhouse). The bed is often made of manure from animals such as horses that pass much undigested plant cellulose in their droppings. Thus hotboxes are to cold frames what hothouses are to greenhouses.
By extension, the term hotbed is used metaphorically for an environment that is ideal for the growth or development of something, especially of something undesirable.
|This ecology-related article is a stub. You can help Wikipedia by expanding it.|
|This horticulture article is a stub. You can help Wikipedia by expanding it.|