Help with Phalaenopsis
 

Hello,

I am new on this board, I have about 20 Phalaenopsis btween 1 and four years old. Few weeks ago I found very strange stain the new grow leaf. it looks it spreaded to many other Phalaenopsis I have.
It looks like a Fungus but I am not an expert need need your help in this board.

I am really worried about my orchids
Alon

pictures
 

I can send some more pics

I can't identify the problem, but as it is coming from the bottom of the leaf and the center of the plant, I would isolate the plant immediately and remove the leaf if it is possible to do so cleanly with a razor blade. Then treat with a 3-in-1 like Bayer to halt the infection. Do you have access to something like this, a combined disease treatment chemical?

With luck the plant will start a new leaf or throw out a basal keiki.

I touched one of the leafs , it feel like it have a sticky coating and it happend only with new leafs.

more pics
 

pictures from different pots

If the new leaves are sticky, chances are you may be dealing with sucking insects. This summer I had really tiny aphids on my den noble, only on the new growth; they were so tiny I couldn’t see them without looking really closely. At first I thought I was dealing with a virus, but then I realized that I was dealing with nasty little aphids. At least the orchid is OK now that I got rid of the aphids. It took several applications of Safer Soap, but all is well now.

Today I double checked all damaged leafs with magnifier, no aphids found. Note, it only show on new leaf.

---------- Post added at 09:42 PM ---------- Previous post was at 09:13 PM ----------

I can't find the Bayer locally.

I have a product based on Cretis

http://www.certisusa.com/pdf-labels/Trilogy-label.pdf