"DaveP" wrote...
Bob Hobden wrote:
..... If it is just a bulb with no leaves and no
growth then act like an experienced Orchid grower and throw it on the
compost bin.

Oosh - a bit severe eh Bob? Back-bulb propagation, even when the bulb
is leafless and devoid of live roots is very possible and used to be
the main means of increasing stock prior to widespread meristem
culture. I've done it many times and have grown very nice specimens
from back bulbs. If they are the only material available, then you
have to go with what you've got. My preferred method was to take a
handful of sphagnum moss (real sphagnum, not any old moss) give it a
good soaking and then wring out excess water so that it is very
lightly moist. If no moss is available, lightly moist perlite is a
good alternative. Place it in a plastic bag, add the back-bulb, seal
the bag and place it in light shade in a cool greenhouse or cool place
indoors.

After a few months, new growth should develop from one or several of
the dormant buds at the base of the bulb and when about 10cms. long,
it can be potted into coarse grade orchid compost using the smallest
practicable sized container. The bulb needs careful watering,
allowing the compost to become slightly dry before giving a thorough
soak. This will encourage new roots to search for moisture. Once the
shoot is growing strongly, the back bulb can be treated as a normal
plant and with reasonable after care, can be expected to flower in 2 -
3 years.

True, I was being a bit acidic, but it is not easy getting back pseudobulbs
to root/grow even for the experienced as your post shows. For the
inexperienced very difficult, and growing it on once you have some growth
isn't easy either.

--
Regards
Bob Hobden