In article ,
says...

"Roger Tonkin" wrote
Over the last couple of weeks one of my phal orchids has gone
off.

The latest leaf has become brown and soft in the middle and
seems to be spreading quickly. So far the other leaves seem OK,
but a close look shows that one may be about to go the same
way.

Apart from throwing it away, is there anything I can do?

Hopefully, this is the link to a pictu

www.flickr.com/photos/139948773@N07

Sorry, but I can not work out how to put in a "proper" link.


Before going down the route of bacterial infections I would look for a
physical cause. I expect the plant is on a windowsill, are those leaves near
the glass, have they touched the glass over winter and got frosted, have
they got water (condensation) on them overnight when it's cold, that sort of
thing.

I was wondering about that, what had I done wrong.

The plant is in a cold north facing bedroom, only heated if we
have family to stay. It is on a table near a window but not
close enough to touch it. We have had a water problem in a
corner of that room, in January with all the rain, but not near
the plant. Given the speed with which it has taken hold, I
don't think it originated in January. I water from the bottom
first thing in the morning, so I don't think it is me!

I have severed the offend leaves close to the plant, where they
look quite healthy, so just keeping my fingers crossed.

--
Roger T

700 ft up in Mid-Wales