HIBISCUS - EXOTIC SUNSET Tropical shub = Do not allow it to freeze... Hibiscus get grumpy when the temps fall below 50 degrees... So if your going in the north be sure to take it in on the cold nights Can be grow as a houseplant If you grow other southern Hibiscus then this plant tolerates the weather the same way. - Cover for Frost or Mild Freeze Grow in full sun to Most Sun