Dave Poole muttered:

The production of adventitious growths on flower spikes of
Phalaenopsis is a relatively common event, but not all hybrids or
species will do this. Over a period of months, yours will develop
into a small plant and should produce several aerial roots. At that
stage, you can remove it and pot it up. Flowering can commence in as
little as 12 months. I've seen plants that have been left to their
own devices where the parent has masses of offsets that had themselves
flowered and produced new offsets. It is an easy and reliable way of
increasing your plants.

I've been putting my Cymbidium orchid out nearly every night to encourage
re-flowering as I was told a nightly drop in temperature of 10 degrees makes
it flower. I've noticed that some of the older growth has been cut back at
the base, should I do the same with the older leaves or leave well alone?