This is a public service blog, please learn form my mistake.
Remember to water your containers in the winter.
This is the first year I have encountered this situation. It has been very very cold for well over a week but it has also been very dry. We have had snow but no rain. I was so busy feeding the birds and looking out the window to comment on how cold it is, I had totally forgotten about my containers. With cold and no rain this is what I suddenly noticed.
My forget me not plants have really suffered in fact pretty sure I have killed them along with the very low temperatures for several days
My violas have not been that successful this year anyway, then forgetting to water them along with the cold weather seems to have very nearly finished them off.
I have watered them along with our trees in containers two days in a row now and tomorrow the weather is due to get warmer and rain. I will keep you updated to see if they have survived.