Some Phalaenopisis will bloom and some will form Keikis from old flower spikes. Depends, I suppose on the ancestors used in making your grocery store Hybrid.

Once had one that bloomed for years on an old spike. Never a thing of beauty. Just let it do its thing (as an experiment).

Countless past discussions on this subject. Put Phalaenopsis Blooming in the search box to find.

Added via edit. Sorry should have found a link. Here is a plant with a similar condition.

Previous discussion

Thanks, arthurm! I appreciate your help and advice.

That's my keiki from the other thread and it still looks like that. I'm waiting for the roots to show up.

suz, I saw your thread. Mine is just leaves with blooms interspersed. I figure it isn't a real keiki. What is really interesting is a neighbor 2 doors down has the same thing going on with one of her grocery store orchids.

I'm wondering if something I did brought this on. When the plants stopped blooming, I set them on the DR table because it gets the best east light. I had a luncheon and moved them to the garage where the windows have the same exposure. It was chilly but not cold in the garage. They stayed there a few days then I moved them back into the DR. I wonder if the change in temperature encouraged them to re-bloom?

Generally, I treat my grocery store orchids as if they were cut flowers - when they stop blooming, I throw them out. I don't have the patience to fiddle with them, but I may see how the 3 I currently have that have completed blooming do. They will have to survive my very "benign neglect."