We haven't had a lot of really cold weather this winter, but we are in the middle of a cold snap which has us shivering, and the rest of the country downright frozen. I've had plants (all containerized) for the past three nights, and things for the most part look like they've survived the 20F degree low.
Pedilanthus is going to lose all its leaves but last year I left it uncovered one night when it barely hit freezing and it turned black almost all the way to the soil. I have a lot of succulents. The kalanchoes have suffered the most, and the sweet little 'flapjack' will be relying on the babies next spring... I don't know whether it is common for the parent plant to die back, but ours has.
We'll be working today at the G'boro farm. When I was there a couple of weeks ago the rudbeckia we planted in Oct. were loaded with tight little buds down in the crown. Wonder if they'll bloom now?