In article lekom.at,
Willi writes

Why graft epiphyllums?

I did it as an experiment, just trying if it would work. But it would
make sense too. You know that most epiphyllums have hanging leaves, so
if you keep them in an ordinary pot, the leaves bend down and the
flowers lie down on whatever the pot stands on. If one could cultivate
them on a trunk of a tall cactus, the leaves could hang down from the
top and the flowers were, let's say, in eye height. IMHO that would look
not too bad, like a palm tree with flowers in May. Watering would be no
problem too, as it is sometimes when you grow the epihyllum in a hanging
basket.

Thanks, I understand now.
--
Sue ]