Answer: Eugenia myrtifolia is not winter hardy in New York so leaving it in the ground isn't a good idea. I'd plant it in a container and move it to a protected place (porch, deck, etc.) or into an unheated basement for the winter months. Wait until spring to prune and shape your topiary, and feed in the spring. If you take your Eugenia indoors over the winter, water sparingly to encourage healthy roots.
Best wishes with your new plant!
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