Those look normal to me, most Oncidium alliance plants get spots like that.

Hi Cheryl,

I will try to look for those fungicides in the local store, and hope I will find them since the staff they sell here are different than in your place.

Thanks for the tips.
Caroline

Hi Tony,

I had this plant for more than 5 years and it never looked like that before. I just hope you are right, so I won't be too worried.

caroline

The spots do not seem to be normal... it looks now to be some sort of fungus that is airborne spread... I have a feeling that if those spots are left alone, they will turn brownish and mushy... eventually, the plant (if left that way) will die.

There are some spots that are naturally occuring in Oncidiinae, but do not look like that... they are usually more subtle and often times black. Also, it is spreading from an Oncidiinae to a Pleurothallid, so I assume that it is a serious problem... I would advise splitting the good unaffected plants from the affected ones immediately to prevent further possible devestation... after the problem is resolved (completely, it may take a month), then increase the growing area's air circulation... good luck =)

-Pat

I have to agree with you Mahon, was hoping you would drive by and read this thread, knew you would have the answer. Air circulation is very important, indirect of course or a blast will happen if plants are in bloom. Where's Caroline from???? Home Depot carries it, physan I am not so sure but online is a great source...gl

Oh my God! What shall I do with that plant?
By the way, I am from south part of Sweden.

Caroline