Posted by amy on April 30, 2003 at 21:26:31:
In Reply to: dendrobium orchid leaves turning yellow posted by Phyllis Burton on April 30, 2003 at 18:07:06:
Don't repot--it is good for dendrobiums to have "crowded" roots. Dendrobiums are a tough orchid to start with. Not difficult, just have long dormancy periods. And it sounds like you purchased it at the start of one. Is it a noble or "phalenopsis" type dendrobium? Some types lose all blooms and most leaves and simply exist living but dormant with sticks coming out of the pot. Soooo pretty? But when they bloom it is all worth it. I supplement my collection with some plants that are pretty year round like phals and paphs.
The other possible issue to address as the orchid leaves started turning yellow so quickly in your care is lighting. Although you are correct that dendrobiums like a lot of light, it is possible that a southern exposure is giving it a bit much this time of year. Depends on where you live. If you are in Florida, TX, S.CA, etc. you may need to move it a foot back from the window or add a sheer window shade.
Good luck. Hope this helps!