Water it before dark. The water you're adding is at fifty degrees and requires a lot of time to lose heat. Water also takes a lot of time to freeze since the heat of crystallization is so high. If you have a system on a timer, set it to water again around 3 AM. If not, don't worry about it. Fortunately, grass is fairly tolerant of a night or two of colder temperatures. My newly sprouting grass that was dormant seeded freezes nightly and so far it hasn't done any harm.

Yup.....big difference between a heavy snow and an ice storm. In an ice storm, it's a given we will lose power. I think it two years ago, a mammoth one come from the north-east. We hunkered down, awaiting. It stopped just as it entered our county.........stopped where the flatland glaciated terrain ends up against the hills. That area just happened to be in a state park/wildlife area, and when we drove a county over to see our accountant, it was like we were eyewitnesses to the glacier of thousands of years ago. Trees were just keeled over and snapped up to that magic line where the ice storm stopped. In our section of the county, it came down like rain. Just the difference of a few degrees. I can't imagine what it must be like to be a linesman, one in a crew who must work night and day for a week or two to bring folks back on the grid. How dangerous it must be to be up into the poles and trees where they're nothing but icicles, and the wind chill is in the negative numbers.

Well I just checked my containers, well I got good news and bad news. Bad news that lupine that had germinated before the freeze is not going to make it, though now I have another new sprout so I will cross my fingers it may get a cotlydon before another freeze moves in. Also lupine does not reseed in my area, it does not even grow in my area and yes this is the perennial that needed a cold period. Good news pretty much everything else looks great, I found some new sprouts also. Now my soapwort, mexican tea, bronze fennel, rosemary and a dianthus has now germinated. So for what I think no matter if it is perennial annual herb veggie if it reseeds you can winter sow it with no extra protection after germination even if a freeze moves in. If doesn't reseed you may lose it after a freeze that happens after germination!!

This was covered in another post not to long ago.... correct me if I'm wrong (pro's), in short it boils down to whether or not they were completely dried before freezing. Moisture in un-dried seeds could cause them to crack and then become non viable. If they are properly dehydrated you have a good chance of germination. dj