I am cross posting from the pests & diseases forum at the suggestion of another user.

We grow monstera deliciosa (split leaf philodendron) for commercial leaf production, and we are seeing a yellow mottling of the leaves which makes them unsaleable.

I am including a photo at

http://www.hawaiifoliage.com/monstera_mottled.jpg

This photo shows that there is also a surface irregularity or depression where the discoloration is present.

The farm is in East Hawaii, where we get 130" avg annual rainfall.

Will be most grateful for any comments.

Aloha
Mike Clark