You should ask your nursery where your buying then plant from about it. If it is relativly young or started by tissue culture then i dont think it would require the dormancy. You could probably leave it until next winter, but it is possible it may need dormancy and you will probably be able to tell if it does if its leaves are a bit smaller and it dosn't grow very fast, or at all.
- Again just ask whoever your buying it from about it, they should know all the details.
Mix