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This is a discussion on What's this brown? within the Orchid Ailments / The Compost Pile forums, part of the Orchid Culture category; This brown spot is marching down a leaf on a Paph I recently received. Any ...
This brown spot is marching down a leaf on a Paph I recently received.
Any ideas what it is?
Looks like some type of fungal attack.
Might be caused by damage to the leaf getting infected.
I would cut a good 1" below the effected area & treat the cut with anti-fungal spray.