Hi
A few months ago I purchased a beautiful Phalaenopsis Orchid with two
stems and white flowers.

All of the flowers have since fallen off.
Each stem is about 14" vertical and 10-13" horizontal.

I know absolutely nothing about Orchids except that it would be nice if
it would flower again.

Green buds appear at the end of the stems.
But as they get bigger they turn yellow and fall off.

Any suggestions are appreciated.
Thanks.