I don't grow them, but here is some of the advice I have seen for UK growers of cymbidiums. I'm not sure our temps get as low as NY but we do get periods of snow.
The advice is that they like a min of 46F and that during Autum (fall), Winter and Spring the night temps should not exceed 55F.
It says they can be grown in the home, but to initiate spikes they need cool nights (in the 46F to 55F range). If you are having problems getting spikes it might be that they are not getting cool enough.
For our climate here it suggests they should be outside between May & September.
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Rosie
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