We're in for a colder weekend, with night time lows in the mid 20s. I'm really glad none of my WSown stuff has sprouted yet. I've kept them in a shady spot that only gets the early morning sun, around 8 or 9 a.m., for an hour or less, to discourage early germination. So far that has worked. Some folks on another forum I belong to already have sprouts in zone 5.
ssgardener, I'd bet your columbines haven't sprouted yet, or at least not many of them - they tend to be slowpokes.
Karen