Daisy, please feel free to keep questioning! I am by no means infallible and there will be both gaps and errors in my knowledge. So go ahead and question/challenge my comments where appropriate.
The vast majority of Cymbidiums available are hybrids of both epiphytic and terrestrial species (and hence are semi-epiphytic or semi-terrestrial). Many involve at least one or more of species that people are most familiar with, such as
Splendid Cymbidium (Cymbidium insigne),
Low's Cymbidium (Cymbidium lowianum) or
Tracy's Cymbidium (Cymbidium tracyanum). Some species are a lot more fussy about their conditions, but the common ones (such as those three) are usually pretty forgiving/hardy. I grow both Cym. lowianum and Cym. insigne in the same media - a well-draining orchid mix which is supposed to be suitable for both terrestrials and epiphytes. This may yet change, as I have plans to experiment with other media in future.
Nadine's Cymbidium is very likely a hybrid of some kind. I'd treat it like any other Cymbidium hybrid; give it a good-quality, well-draining orchid mix and plenty of light (though not too much heat, as many Cymbidiums are cool-growing).
