Basement dormancy?

I live in Chicago. For the dormancy period can I keep my young vft's in a non-heated basement? It doesn't get as cold as the frig but it's all concrete. Also how will I know when the vft's are going into dormancy?
 
I think that's what I may end up doing, but then again, I haven't done it before either.

It may not work either. The only window in my basement where it could get moderate light is pretty close to the boiler.

Anyone else know?

BEATNIK
 
Top