I’m not too worried about the cold spell a few days ago. We had a good period of cold weather leading up to it, and it only got down to -9F. Of course a lot of winter and spring to go yet, so no celebrating so far here.
Last winter it also got to -9F and there was considerable loss of fruit buds, but that event happened without much cold weather at all. It was very sudden.
I’ve mentioned it on the forum before, but for the last few years, I’ve been moving toward trees which are hardier and bloom later, so I’ve already gotten rid of a lot of trees which are questionable in marginal weather.
I’ve only lost peach trees when I’ve pruned them too hard too close to winter (and mainly young trees). It’s not been cold enough here to kill peach trees outright unless they are under a lot of stress which slows dormancy. But in the last 20 years or so, it really hasn’t gotten that cold here. I think around -12ish is the coldest it’s gotten during for the last couple decades.
In 1991 it got down to around -22F for the all time low record for Kansas City. I remember that cold snap. It was close to Christmas. My guess is that it pretty much iced all the peach trees in the state. Cold snaps like that will come again. Records are made to be broken, but I hope it’s a long time away.