I have a Morden 604 COT apricot that is about 3 weeks behind my plum, cherry, and apple trees. The plum has just started to bloom and the others should next week. The apricot is just starting to show green buds on a few branches. It is supposed to be hardy in Edmonton. However, I pruned dead branches last year and we have had a cold winter (-30C to -35C, centigrade and Fahrenheit scales meet at -40). Is there hope?

I have volunteer cherry (Evans?), plum, and apple sprouts to replace the apricot with. All of these would require aggressive pruning to keep them in the space available. I'm leaning to the cherry.