
1) Area of rapid development 2) Breeding ground 3) Center of activity 4) Cousin of a terrarium 5) Exclusively Saxon word 6) Exclusively Anglo word 7) Fast-growing environment 8) Fertile plot 9) Forcing frame 10) Forcing house 11) Greenhouse area 12) Growth environment 13) Incubation site, of a kind
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https://www.crosswordclues.com/clue/hotbed

1) Den 2) Nest 3) Steamedcrib
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https://www.crosswordclues.com/clue/hotbed

In biology, a hotbed is a pile of decaying organic matter warmer than its surroundings due to the heat given off by the metabolism of the microorganisms in the decomposing pile. 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...
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http://en.wikipedia.org/wiki/Hotbed

• (n.) A place which favors rapid growth or development; as, a hotbed of sedition. • (n.) A bed of earth heated by fermenting manure or other substances, and covered with glass, intended for raising early plants, or for nourishing exotics.
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http://thinkexist.com/dictionary/meaning/hotbed/

A heated cold frame.
Found on
http://urbanext.illinois.edu/veggies/glossary.cfm

(from the article `botanical garden`) ...orchids must be greenhouse grown. The same is true of tropical ferns, bromeliads, economic plants of the tropics or near-tropics, many cacti and ... ...that builds up in the cold frame during the day aids in warming the soil, which releases its heat gradually at night to warm the plants. When ......
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http://www.britannica.com/eb/a-z/h/72

a bed of soil enclosed by a structure with a top of glass, heated, often by manure, for forcing or raising seedlings.
Found on
http://www.encyclo.co.uk/local/20003
Hot'bed` noun 1. (Gardening) A bed of earth heated by fermenting manure or other substances, and covered with glass, intended for raising early plants, or for nourishing exotics.
2. A place which favors rapid growth or development; as, a
hotbed of sedition.
Found on
http://www.encyclo.co.uk/webster/H/65

[
n] - a situation that is ideal for rapid development (especially of something bad) 2. [n] - a bed of earth covered with glass and heated by rotting manure to promote the growth of plants
Found on
http://www.webdictionary.co.uk/definition.php?query=hotbed

A cold frame with soil heated by electric cables or decomposing animal manure, used for raising plants and forcing vegetables early in the year.
Found on
https://extension.umd.edu/hgic/resource-library/vegetable-gardening-glossar
noun a bed of earth covered with glass and heated by rotting manure to promote the growth of plants
Found on
https://www.encyclo.co.uk/local/20974

A bed of soil heated by fermenting material, hot water pipes or electric heating cables.
Found on
https://www.encyclo.co.uk/local/22488
No exact match found.