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hotbed

hotbed, low, glass-covered frame structure for starting tender plants. It differs from a cold frame only in that the soil is heated—either artificially as by underground electric wiring or steampipes, or naturally with partially fermented stable manure, which is mixed with dead leaves or straw, placed in the bottom of the hotbed frame, and covered with a layer of soil. Heat is produced by the decaying organic matter. Proper ventilation is important, as is thermostatic control of artificially heated hotbeds. Tomatoes, cucumbers, celery, and other crops can be grown in hotbeds in the spring.

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"hotbed." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 26 Jun. 2017 <http://www.encyclopedia.com>.

"hotbed." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (June 26, 2017). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/hotbed

"hotbed." The Columbia Encyclopedia, 6th ed.. . Retrieved June 26, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/hotbed

hotbed

hot·bed / ˈhätˌbed/ • n. a bed of earth heated by fermenting manure, for raising or forcing plants. ∎  an environment promoting the growth of something, esp. something unwelcome: the country was a hotbed of revolt and dissension.

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"hotbed." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 26 Jun. 2017 <http://www.encyclopedia.com>.

"hotbed." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (June 26, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/hotbed-0

"hotbed." The Oxford Pocket Dictionary of Current English. . Retrieved June 26, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/hotbed-0

hotbed

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"hotbed." Oxford Dictionary of Rhymes. . Encyclopedia.com. 26 Jun. 2017 <http://www.encyclopedia.com>.

"hotbed." Oxford Dictionary of Rhymes. . Encyclopedia.com. (June 26, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/hotbed

"hotbed." Oxford Dictionary of Rhymes. . Retrieved June 26, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/hotbed