Frank,

I really cannot be of any help other than to say that while that probably
isn't "natural," it sure is common. I used to see it fairly frequently,
and other than being bothersome, it really doesn't seem to affect flowering
or putting out new growths.

I haven't seen that in a while on my paphs, but I cannot say why that might
be. I do grow them all in semi-hydroponics, so maybe it's the fact that
they get a more-or-less constant food and water supply is part of the
question, but I also have been more diligent about the use of disinfectants
and neem oil as a preventive measure.

I doubt that it's nutritional, as that usually expresses itself either by
chlorosis or by leaf tip browning. At what concentration do you feed and
how often? I suppose it could be bacterial or fungal in nature, or insect
damage, but the fact that it affects all of your plants suggests that it's
not bugs.

--

Ray Barkalow - First Rays Orchids - www.firstrays.com
Plants, Supplies, Books, Artwork, and Lots of Free Info!
..
"Frank Rittwager" wrote in message
...

Can anyone take a guess at what this leaf problem is? I have numerous
Paphs
of several kinds (species, primaries, and novelties), and they all seem to
get this type of spot on various leaves on a regular basis. When I cut
off
the end of the leaf, the problem seems to stop spreading for a couple of
months, and then the leaf starts to die (becomes dark brown) again
(starting
at the end of the leaf). Is this just natural?

http://216.160.131.65/LeafSpot1.jpg
http://216.160.131.65/LeafSpot2.jpg

Environmental Details:
Grown In: Medium Sized Coconut Husk
Plant Food: "Grow More" Urea Free 20-10-20
Watering Schedule: Every 4-5 days
Temperatu ~75 degrees F.
Lights: Natural and 4 Foot Cool-Warm Bulb (Mixed)

Please let me know if I can supply any more details or additional
photos...



Thanks for any information or opinions!!!!
Frank