Wednesday, February 26, 2014

Oncidium orchid care

  • Oncidiums prefer bright light. An eastern, western, or southern exposure is ideal. If the leaves are dark green, the plants is not getting enough light. On the other hand, if the leaves have a reddish color, they are getting too much light.    
  • Oncidiums do best in an east, west, or south facing window.
  • If the foliage on the plant is dark green and limp, it is an indication the plant needs more light. Reddish leaves indicate the plant is getting to much light. Ideally, the foliage should be a bright olive green.

  • Ideally,o ncidiums prefer night time temperatures between 55-65°F and 75-85°F during the day. However, oncidiums are fairly tough in the sense that they can take temperatures up to 95°F temperature. If the temperatures do get little high, one should increase the humidity, water and air circulation around the plant to compensate.  
  • Do not expose oncidiums to cold drafts. 

  • Oncidiums do not need as much water as phalaenopsis. They have water storage bulbs and need to dry out between waterings.
  • The best way to water oncidiums is to remove them from their decorative pots and flush them with water for 1 to 2 minutes under a faucet. If that is not possible, you can also place 5 or so ice cubes on the bark once a week. 

  • The ideal humidity conditions for oncidiums is between 55% and 75% humidity. In warmer and drier conditions, oncidiums can be placed on gravel that has water in the bottom to elevate the local humidity. However, you should never let the pots sit in water as this will cause root rot. 
  • On days of high humidity make sure there is good air circulation around the plants. 

  • In general, oncidiums do best and are at their healthiest when fertilized on a regular basis. Once a month is ideal. 
  • The growers recommend that you use a well balanced formulation such as 30-10-10 or a ratio that is similar. However, it is important that the plants are slightly moist before fertilizing to avoid burning.  

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