And they like to be tight in their pots, underpotted if possible, that way
they won't keep trying to fill their space with roots. (paphs do that too)
Medium should be in proportion to the root size, so small bark for fine
roots. Smallest pot that will accomodate the roots. I do not really believe
these need a drier winter rest, but I tend to reduce winter watering. Light
is usually the key. All the light short of burning is the usual "rule".
Feel the leaves with your cheek to feel if they are too hot. Move away from
the window as needed.

Good luck

K Barrett
"Diana Kulaga" wrote in message
link.net...
Hi, Tom,

You didn't say whether the plant in question ever bloomed originally - did
you purchase it in bloom? There is the occasional (frustrating!) orchid
that just won't flower no matter what one does.

Having said that, most Oncidiums like good light, so I don't think the
basement and low light is a good idea. Maybe some continuity, high light
and humidity, feeding normally, and less relocating of the plant will
help.
Orchids like their micro climates, and they don't especially like to be
moved, unless the plant is in the wrong environment in the first place.

HTH

Diana