I've got actually #8 tech cable from the house to the grow room.
I thought it was #10 but it's 8 even better.
That will come through the floor up into a sub panel.
Probably 60 Amp but I'm looking at something bigger.
If I have to run the greenhouse next year off it.
Ill need more power.
Then from 15 Amp stablock breakers I'll run 14/2 BX on the surface.
I'll have a board for timers , controls and any display screens
All surface mount visible and accessible.
No drywall screws through a wire.
No drafty spots from boxes in the wall.
No worries about changing configuration with new equipment requirements.
I think it's a good idea.
See something I'm missing?
Or a suggestion.
I'm open to ideas and suggestions.
But yeah bx on the surface.
Edit sorry forgot to hit post yesterday.
Stay safe
Bill284