Hi fellows, I've done an experiment in last 3 years. I've got three plants (suppose 3 divisions of same mother plant) of Cymbidium. I lleft them ouside on my balcony north-east facing for 3 years, from -15°C (5°F) under rain and snow to +39°C (103°F) in full sun. Never fertilized, always the same media (bark and (I think) some charcoal.
This year, flowers!! They earned a good repot
Considering the fact I almost forget to have these plants, as you can see from theri totally natural look, stems are short, the flowers are only 4/7 per stem, but the size of flowers is pretty good! Lovely my little 3 cymbidium-tanks
ADD: pics were right set but don't know why they result all "horizontalized"