This is my first time being a gardener and I think I am hooked! I love looking at my flowers every day and seeing something new. I have had great luck so far and hopefully next Spring they will all come back. I'm just not too sure about some of the flowers that I have like the Luna Hibicus. Do I need to cover them with a rose cone so the frost does not hurt them? Or do I just cut them down? If anyone can help, it would be very much appreciated!