Temps get below 32 F often during the winter months, but my plants are in the ground and I don't want to dig them up.
How Do I Care for Hibiscus Plants Outdoors During the Winter?
Certified GKH Gardening Expert
Hardy hibiscus can usually survive winter outdoors but in cooler regions will need additional protection, such as mulch and wrapping. Therefore, you don't need to dig it up. As long as you can give it added protection during extreme freezing conditions (and as long as you don't have the tropical type-which needs to be inside over winter), it should be ok.