the rule in eastern-ontario used to be :
do your planting of frost-prone plants over the "victoria day long weekend" - that's the middle of may !
of course , we planted earlier and earlier ...
perhaps we are back to planting victoria day weekend !
my parents arrived for a visit from germany on may 6 , 1966 and on the way back from montreal it started to snow !!!
my mother was ready to hop on the next ship going back
hbg