Same here in Rome Umbrian. Ground fully frozen. Many succulents' leaves reduced to mush, Cannas browned right down to soil level. Who knows what will have survived come spring. One day of better weather forecast, Thursday, and then down to freezing point for a further week. No snow so far. There are one or two plants still flowering though including Tagetes lemmonii even though the petals are not as pristine as they were a week ago.