POTTING:
Use a potting medium that gives excellent drainage, yet retains some moisture; fine fir bark, or fir bark used in combination with perlite is good; a commercially prepared cymbidium mix is also fine. To maintain good drainage, repot in fresh medium every 2-3 years, in spring right after blooming. When repotting, pot size should be just large enough to accomodate 3 years more growth; no larger.
 
WATERING:
Keep plants well watered during warm weather, in periods of active growth; potting medium should never be allowed to completely dry out, but do not keep the plants constantly wet, either. Gradually reduce frequency of watering in fall as temperatures decrease. As temperatures rise again in spring, resume more frequent watering.
 
FERTILIZING:
Cymbidiums may be fed with a high-nitrogen formula (30-10-10, for example) from spring to mid summer; then changed to a high bloom formula (5-30-10, for example) for the balance of the year. Alternately, to simplify, you can obtain good results by using a soluble (20-20-20, or 20-10-20 for example) formula throughout the year, or osmocote granules every 4 months. Half strength works best.
 
LIGHT & LOCATION:
Strong light is necessary for good flower production. Grow in an area with strong light (8,000fc) all day if possible, but watch your plants carefully to make sure that they do not yellow or burn. Inland, grow under light shade to protect the plants from the hot afternoon sun. Sturdy medium green foliage, with perhaps a bit of yellow during the summer, indicates the correct amount of light; if foliage is deep green, gradually increase light; if definitely yellowish, check that plants have been adequately fertilized, and if so, decrease light.
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Cymbidium Orchid