I purchased quite a few daylilies this year. When I planted them I mulched them. Do I need to mulch again for the winter? I have one area of older dayliles that I did nothing to last year due to just moving into my house and they did well this year.

Also we had lots of rain several weeks ago. My husband, thinking he was helping out, pulled the dead scrapes out of my tiger lillie patch. He stated they just came out of the groud when he pulled them. Did this ruin new growth for next year? I don't know much about daylily flowers so I'm wondering if new flower growth is determined by last years scrap stem.