Found this on another forum, dont know if it helps or answers your question , It does make sense thought.
"Seems logical that, just like CPs:
If its a plant that naturally grows in an environmment where plants go dormant in the winter, then it needs a winter dormancy.
If its not, then it doesnt..
The type of plant should make no difference..
(and where you personally live is also irrelevant..all that matters is the native climate of the plant)
Scot "