Modern cymbidium orchid hybrids are among the most beautiful and useful orchids grown by professional growers and amateurs alike. The graceful sprays of white, yellow, red, green or pink flowers are extremely long lasting and perfectly suited for decorative use. Species cymbidiums originate from the cooler regions of India, Burma, Thailand and Viet Nam where substantial changes in temperature occur. Daytime temperatures may vary from 70 degree to 100 degree F and nighttime temperatures from 40 degree to sixty degree F. Cymbidiums are continuously growing, merely showing their growth during the winter. They should therefore be kept evenly moist but not wet throughout the year. Cymbidiums enjoy regular overhead spraying during the summer.


We use Redwood bark “wool” in our culture. This media is ideal with excellent water absorption and retention and an air-filled porosity of 45%. If this media is not available, the liners can be slip potted into 6-inch pots using coconut fiber, sphagnum moss, or fir bark. The Redwood bark wool breaks down very slowly. If Redwood bark wool is used it must be packed very tightly around the roots of the plant.


Any commercial brand such as Peters, Plantex, and Scotts water-soluble fertilizer with a balanced NPK ration of 20-20-20 or 18-18-18 will be fine. Fertilize every 3 out of 4 waterings. A concentration of 100 ppm Nitrogen is recommended for each feeding. A slow release fertilizer such as Nutracote or Osmocote may be used according to the manufacturer’s recommendations. Switch to 10-30-20 during August and September.


Water enough to keep the plants moist but not wet. Do not allow the plants to become completely dry. If Redwood Wool or Coconut fiber is used the plants may be watered more frequently without danger of over watering. During the warmer months of the year the plants may require watering every 2 or 3 days and daily misting if the temperatures exceed 85 degrees F.


During the late spring, summer and early fall, 40 to 50% (4,000 to 5,000 ft. candles) of shading is needed. During the winter months as much light as possible is allowed in the Northern Hemisphere.


Ideal range is from 50 degrees F minimum to 80 maximum degrees F. Acceptable range is 45 to 90 degrees F. Cymbidiums will tolerate temperatures as low as 34 degrees F without permanent damage. Bud drop, however, may occur at this temperature.


Avid — controls mites, thrips and aphids
Mesurol — controls mites, slugs and snails
Orthene and Diazinon — control all sucking insects

Fungicides and Bactericides

Physan (many other chemical agents are available)


Repot when the roots of the plant fill the pot or when the mix has broken down.

Flower initiation

• Space plants to allow maximum light to each plant.
• Limit Nitrogen fertilizer level to less than 100 PPM.
• Must have high-low temperature difference of at least 20 degrees F.
• Eliminate fertilization for a 2 week period in June (controversial).
• Finish division of plants and repotting before July.
• Never allow plants to completely dry out.
• Repot when mix begins to deteriorate or the plants root system becomes pot bound.
• Begin maximum feeding and watering immediately after flowering


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