This ‘Miracle of the Flowers’ Has Happened Repeatedly Near Turin for 600 Years| National Catholic Register (ncregister.com) Check this article out, it dispels "earthly" logic and why had I never heard of this before? "Madonna dei Fiori" in Italian, yes, in short, around Christmastime every year (except in 1914 and 1939 when the great wars began), these flowers blossom there near Turin, Italy. I think they say they are blackthorn bushes.
this reminds me of the liquefaction of the blood of Saint Januarius which when it does not occur is an omen of catastrophic events