Cymbidiums are among the most popular winter and spring blooming orchids. They are excellent patio plants. The breath taking sprays of flowers make ideal home or patio decorations. From the time that the first flower bud opens, the sprays will remain in bloom for the next 2~3 months. They are among the easiest and most rewarding orchids to grow.
Lighting
Sufficient lighting is a must for successful cultivation. Place Cymbidiums on a covered patio protected from the mid-afternoon sun. Direct morning and late afternoon sun can be tolerated by the plants, provided exposure occurs gradually. Light green leaves with a tinge of yellow are an indication of maximum lighting tolerance by the plant. Dark green leaves are an indication of insufficient lighting.
Temperature
Cymbidiums may be divided into two main groups: Standard Cymbidiums (large-flowered type) and Miniature Cymbidiums (small-flowered type).
Mature Cymbidiums require a nighttime temperature below 60°F during the early fall to initiate flower spikes. For best results, provide nighttime temperatures 50 to 60°F and daytime temperatures of 70 to 85°F. Cymbidiums can tolerate temperatures up to 100°F if shading, humidity and air circulation are increased.
Watering
Depending upon the temperature, Cymbidiums should be watered about once or twice a week. During the summer, the plants may need to be watered every 4-5 days. The rule of thumb for watering should be as followed: More heat more water, less heat less water.
Cymbidiums prefer to be kept on the moist side. This does not mean that they like to be left in standing water. Try to water the plants early in the day, so that the foliage will be dry by nightfall. To prevent bacterial and fungal disease use Physan 20 once a month.
Humidity
Cymbidiums prefer 40-50% humidity.
Fertilizer
Cymbidiums must be fertilized on a regular basis! For best results, use Norman's Optimal Orchid Nutrients every other week. It is recommended to pre-water plants, before applying the diluted nutrient solution if the potting media is dry.
Potting
Cymbidiums should be grown in Fine Orchid Bark Mix. Cymbidiums should be repotted once every two years. Ideally Cymbidiums should be repotted immediately after flowering.
Pests
Common pests associated with Cymbidiums are aphids, scale and spider mites. X-CLUDE, encapsulated pyrethrum time-release insecticide and Neem Oil are the most efficient methods of pest control.
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