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Forcing (view source)

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Forcing. The word forcing is variously used. Properly, it should designate the growing of plants outside their usual or normal season. This distinguishes forcing from the ordinary purpose of the glasshouse, which is to imitate the usual season in which plants grow. For example, begonias are not forced: we endeavor to protect them and to give them the season and the conditions under which they grow in the wild. Carnations when flowered in the winter are forced, because we transpose their seasons. Chrysanthemums blooming in-October and November are not forced: they are only protected. Sometimes the word forcing is used in a very special sense, to denote the production of flowers from bulbs or tubers in a very short time under the influence of a very high temperature. Thus, the lily-of-the-valley may be placed in a temperature of 90° or above, and the large buds be forced to throw out their flowers before the plant secures a firm foothold on the soil.
 
Forcing. The word forcing is variously used. Properly, it should designate the growing of plants outside their usual or normal season. This distinguishes forcing from the ordinary purpose of the glasshouse, which is to imitate the usual season in which plants grow. For example, begonias are not forced: we endeavor to protect them and to give them the season and the conditions under which they grow in the wild. Carnations when flowered in the winter are forced, because we transpose their seasons. Chrysanthemums blooming in-October and November are not forced: they are only protected. Sometimes the word forcing is used in a very special sense, to denote the production of flowers from bulbs or tubers in a very short time under the influence of a very high temperature. Thus, the lily-of-the-valley may be placed in a temperature of 90° or above, and the large buds be forced to throw out their flowers before the plant secures a firm foothold on the soil.
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The accompanying illustrations (Figs. 1541-1548) show old and recent styles of American forcing-houses. For further discussion of glasshouses, see Greenhouse.
 
The accompanying illustrations (Figs. 1541-1548) show old and recent styles of American forcing-houses. For further discussion of glasshouses, see Greenhouse.
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L.H. B.
      
The forcing of vegetables.
 
The forcing of vegetables.
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== Cultivation  ==
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=== Propagation  ===
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=== Pests and diseases  ===
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==Species== <!--  This section should be renamed Cultivars if it appears on a page for a species (rather than genus), or perhaps Varieties if there is a mix of cultivars, species, hybrids, etc    -->
      
== Gallery  ==
 
== Gallery  ==
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== References  ==
 
== References  ==
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*[[Standard Cyclopedia of Horticulture]], by L. H. Bailey, MacMillan Co., 1963 <!--- xxxxx  *Flora: The Gardener's Bible, by Sean Hogan. Global Book Publishing, 2003. ISBN 0881925381  --> <!--- xxxxx  *American Horticultural Society: A-Z Encyclopedia of Garden Plants, by Christopher Brickell, Judith D. Zuk. 1996. ISBN 0789419432  --> <!--- xxxxx  *Sunset National Garden Book. Sunset Books, Inc., 1997. ISBN 0376038608  -->
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*[[Standard Cyclopedia of Horticulture]], by L. H. Bailey, MacMillan Co., 1963  
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<!--- xxxxx  *Flora: The Gardener's Bible, by Sean Hogan. Global Book Publishing, 2003. ISBN 0881925381  -->  
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<!--- xxxxx  *American Horticultural Society: A-Z Encyclopedia of Garden Plants, by Christopher Brickell, Judith D. Zuk. 1996. ISBN 0789419432  -->  
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<!--- xxxxx  *Sunset National Garden Book. Sunset Books, Inc., 1997. ISBN 0376038608  -->
    
== External links  ==
 
== External links  ==
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