Whats wrong with this leaf?

[greenbean]

I don't have much experience with orchid diseases, so there may be some disease causing this, but it sounds like too much light. Is the orchid right in that SW window? That's way to much light for Phals. You can try moving it at least a couple feet from the window or moving it to an east window or west window that doesn't get sun until really late afternoon. Another factor to consider is temperature. What temperatures are you giving your Phal?

[camille1585]

Originally Posted by greenbean

I don't have much experience with orchid diseases, so there may be some disease causing this, but it sounds like too much light. Is the orchid right in that SW window? That's way to much light for Phals. You can try moving it at least a couple feet from the window or moving it to an east window or west window that doesn't get sun until really late afternoon. Another factor to consider is temperature. What temperatures are you giving your Phal?

I don't think too much light is the problem. She is in Canada, and it is winter. A south west window is a minimum, even for phals. FYI, where I live in france (with is at the same latitude as the great lakes) I leaves my phals in a south facing window all summer long. Since there is a bush near the window, they get very bright, dappled sunlight most of the day. And my phals are perfectly fine.

I am tempted to think that there is some sort of disease at work here.