John,

Grammatophyllums are not deciduous, but need very warm, very humid
conditions, or they will blow their leaves and not thrive.

They seem to do fine in S/H culture, if the other criteria are met.

--

Ray Barkalow - First Rays Orchids - www.firstrays.com
Plants, Supplies, Artwork, Books and Lots of Free Info!


"John DeGood" wrote in message
...
I acquired an out-of-bloom (6 pseudobulbs, 6" pot) Grammatophyllum scriptum
in December when Franks Nurseries went bankrupt. I repotted it into
semi-hydroponics at that time. Several weeks ago leaves began suddenly
turning yellow and dropping within a period of days. It has now lost more
than 3/4 of its leaves, and I suspect the few remaining will soon turn
yellow and drop as well.

Although Grammatophyllum is a member of the Cymbidium Alliance, its
general form and roots seemed similar enough to the Oncidium Alliance
which I have very successfully grown in s/h that I hoped it would also
enjoy that culture. Its roots still look white and firm.

So, if there are any Grammatophyllum experts in this group, is the leaf
loss normal or am I killing this plant? Thanks!

John