We should be fine tonight, but tomorrow will kill them, as well as the tulips if I can't figure something out.
I will be outside as soon as the sun is up tomorrow. Mums are especially in peril, because this is their most vulnerable time. I will be covering them with about 4-5 inches of topsoil I bought at a garden center today.
Roses are going to be cut back and then covered with dirt and one of those foam pots that look like stoneware. Hostas are getting the dirt-pot treatment as well. Most of the daylilies are going to have to fend for themselves. They may lose some leaves but will send up new growth before blooming time.
This is a big project because I have many, many flower beds.