Hothouse Plants

Hothouse Plants

 

vegetable, ornamental, fruit, and berry crops cultivated in hothouses. Hothouse plants yield a crop during periods when outdoor cultivation is impossible. Vegetables raised in hothouses include cucumbers, tomatoes, and—to a lesser extent—peppers, lettuce, Chinese cabbage, cauliflower, spinach, dill, radishes, onions, celery, and parsley. The most common melon species raised in hothouses is the muskmelon. Ornamental hothouse plants include chrysanthemums, pinks, callas, cyclamens, stocks, hydrangeas, cinerarias, and primroses. Lemons, peaches, strawberries, grapes, and mushrooms (champignons) are sometimes raised in hothouses. Special varieties and hybrids of the above-mentioned crops are developed for hothouse cultivation.

Methods of cultivation include sowing seeds in the ground or on benches (radishes, dill), planting seedlings (cucumbers, tomatoes), maturing (cauliflower), and forcing (celery, onions grown for greens). There are a number of accepted crop rotations, making possible several harvests in the course of a year. Vegetables are cultivated as independent crops or as fillers, that is, plants sown or set out between rows of the principal crop. Glass-enclosed winter hothouses in the Central European USSR yield 28 kg of cucumbers (principal crop) and 1 kg of Chinese cabbage (filler) per sq m in the first rotation, 24 chrysanthemums per sq m in the second rotation, and 8 kg of green onions per sq m in the third rotation. Another standard crop rotation yields 18–20 kg of cucumbers per sq m in the first rotation and 7–8 kg of tomatoes per sq m in the second rotation.

Hothouse plants are grown in soil or, less frequently, in nutrient solutions (seeHYDROPONICS). Crop care involves the maintenance of good lighting and optimal air and soil temperature and humidity, the application of inorganic and organic fertilizers, and the control of pests and diseases. Crops are harvested continuously, as the various plant organs—the fruits, leaves, or heads—become commercially accepted. Hothouse cultivation makes use of the latest achievements in science and engineering and is highly industrialized.

REFERENCES

See references under HOTHOUSE.

G. V. BOOS

References in classic literature ?
A grand arch, cut in the upper wall at one end, surmounted an oaken orchestra, with an open room behind it, where hothouse plants and stalls for refreshments were disposed; an agreeable resort for gentlemen disposed to loiter, and yet to exchange the occasional crush down below for a more commodious point of view.
Mrs Wititterly is of a very excitable nature; very delicate, very fragile; a hothouse plant, an exotic.
Craig, with the wonderful hothouse plant in his button-hole, was staring at her, she knew.
Hothouse plants and flowers seem to me, though, to be a costly and unnatural attempt to recapture something natural.
The groupings of pieces seem to surge and recede rhythmically in imitation of the vagaries of nature, an impression enhanced by the way the hothouse plants are beginning to grow through and around the sculptures.
Cold tap water can be very detrimental, particularly to hothouse plants.
Slow-growing, tempermental, and pricey, orchids remained hothouse plants for years until the advent of plant cloning.
I would compare that with a grammar school which has a hothouse atmosphere and as we all know hothouse plants do not live very long in the real world.
Never buy hothouse plants that have been allowed to stand out of doors during cold weather.