Crape myrtle in container

Would it be too late to plant it in a barrel? By the time it gets established, fall will arrive, ( less than 2 months away here in the northeast. I know hardy as it is, if there is extreme cold winter, it would probably die..or am I wrong? Now its in a 12" pot outside and doing nicely, but planning on to transplant it to a barrel for my niece..who loves it.
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