Cymbidium will tolerate considerable summer heat as long as they get cool, mild night temperatures (between 10-15 degrees C.). Cold weather, even down to 0 degrees C. for a few hours each night, will not damage an acclimatized plant, but once the plant spikes or flowers, it should be protected from temperatures below 3C. Regardless, plants should always be kept free of frost.
Light: Your Cymbidium enjoys the morning and afternoon sun most, yet should be protected from the hot mid-day sun. A light green leaf with just a hint of yellow indicates the maximum amount of sun the plant can take, and a dark green leaf indicates not enough sun.
Water: Watering of Cymbidium is a delicate balancing act. They should not be allowed to go dry, yet they don't care for a soggy environment either. Watering once every seven to ten days is about right. As with everything else, special consideration must be given for the drying effects of varying ambient air temperature and humidity.
Feeding: High nitrogen fertilizers should be used from February until July, while low nitrogen fertilizers should be used from August until January. Feed one teaspoon to a gallon of water once a month.
Repot: Repot every two to three years from February to June with a well-draining medium. Fine bark is suitable in mild summer climates, while a finer medium Orchid Mix works well in warmer summer areas.