What is the best way to overwinter a large Frangipani currently in a container planter on a patio in New York City. Does it have to be brought indoors, or can it be kept outdoors wrapped in burlap and mulched? Brought it indoors last year, where it dropped most if its' leaves, but then grew back in even better shape when brought outdoors in the spring. However, it has gotten very large and heavy and not easy to move. Any suggestions will be appreciated.