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By Marty at 2007-07-12 19:45
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Genus Description: On the West Coast of the United States, and in other cool-summer areas that receive no severe frosts, cymbidiums are among the most popular of spring-flowering orchids and are often grown as garden plants. Their striking sprays of long-lasting blooms provide ideal home or patio decoration, and are often used as cut flowers. There are both standard (large-flowered) and miniature (smaller-flowered) types grown. The miniature types, often known as “novelties,” are more heat-tolerant, but neither type is particularly good in warm summer areas; nor are cymbidiums of any kind successful as houseplants. Cymbidiums are terrestrial plants in nature and require a moisture-retentive but well-drained mix. Fir bark is most commonly used, though more and more growers are switching to artificial or inorganic mixes as quality fir bark becomes less available. Light: Sufficient light is important for healthy growth and flower production. Temperature: Mature plants need night temperatures in the low 60s or high 50s in late summer to initiate flower spikes. Watering: Mature plants must never dry out between waterings. Humidity & Air Movement: Cymbidiums need 50 to 60 percent. In the home, while in bloom, place on trays of moistened pebbles. In greenhouse, use a humidifier if conditions are too dry. Fertilizing: Must be provided on a regular basis because most potting media have little. The exact fertilizer you use will depend on the mix in which your plant is growing. A good general rule is to apply a balanced (10-10-10, 12-12-12 or similar ratio) fertilizer “weakly, weekly.” That is, fertilize every week at one quarter to one
half of the recommended dilution. Repotting and Dividing: Best done every two to three years in spring immediately after flowering to allow maximum time to reestablish before next flowering season.
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