Q.Roses
I had one rose off this tree last year is it dead now?It’s one of my nans plants and I wanted to try and save it or am I to late?

Rose trees are grafted creations by man and thus not naturally occurring in nature. The upper desired rose bush is grafted onto a hardy standard/rose to create the tree effect. In many cold climates they are considered annuals as the top part just cannot survive winter without some major protection. Sorry to say but yours does look to have passed on. You could try pruning it a bit a see if that sends a message to it to grow.