Low of -6.8 overnight, hovering around that temp for about seven hours. That was finally enough to kill the pokeweed growing in my front garden. It's interesting to see how much certain plants can handle.
Yesterday morning it survived -4, but it was only that cold for less than an hour
This morning:
The passion flower plant is surprisingly tough, last year it stayed lush and green until the Christmas blizzard, which dropped to -17 with 100km/h winds. Survived last night no problem