The temperature was "only" about as low as -4, so the frost was a lot less spiky than the impressive hoar frost we had a couple of years ago.
We had temperatures as low as -10 that winter (which is very unusual round here!) and my old flat was seriously chilly with swirls of ice on the inside of the windows on several occasions. I spent a lot of days working in a woolly hat and fingerless gloves and wearing my dressing gown over my clothes as a not especially stylish indoor coat. I do miss my old flat sometimes, but when the winter rolls round I definitely don't miss the draughty single glazing and lack of insulation!
It might not have been as impressive as a couple of years ago, but I was still tempted to go out into the cold to take some snaps as the frost had covered everything in the garden with tiny little spikes. It was as if all the plants had suddenly become members of the cactus family overnight.
The trees looked especially amazing. This is what the branches of the silver birch tree (in the photo at the top of this post) looked like close up: