So previous record was in the 1400s, and was one day different. If this is directly tied to climate change then what was the cause then?
If the article was about mean peak bloom then I wouldn't really have anything to say about it.
The takeaway is that we've seen these conditions once in the last 1200 years, but based on recent data we expect things to continue to get hotter. As I saw someone say: don't think of this as the hottest year on record, think of this as the coolest year for the rest of your life.
As someone who had to suffer through −40-45°C winters all my life, I can live with that. I don't know if it's due to climate change, but this winter was pretty tame. Only a few −40°C days in total, not three to four weeks as it always had been previously.
The difference is the steep trend in the past 150 years.
Could it be global warming? Sure, but we need to be careful with our confirmation bias.
Yes, the article includes a nice graphic showing the "peak bloom day of the year". It shows that average peak bloom date has been getting steadily earlier in recent history.