Phalaenopsis orchid

Question

One bloom is fading. Do I leave it on the stalk or remove it?

Answer 1

You can prune away the spent flower, with a clean, sterile garden scissor.

When all the flowers on a stem are done, you can prune the stem down to the base of the plant.

https://www.gardeningknowhow.com/ornamental/flowers/orchids/indoor-orchid-care.htm
https://www.gardeningknowhow.com/ornamental/flowers/orchids/make-orchid-bloom.htm