I think I'd be in zone 7-ish or closer to 6?
We use Celsius/Centigrade.
Last winter was really cold, lots of gardeners counting their plant casualties in spring.
Like -20 C (about 0 -4 F)
Well, Saturday came and I bargained with dad.
I dug up about 5-6 plum trees and a really big Elaeagnus angustifolia.
Two more walnut trees "bothering" me...but it's a start.
As a result of the space created, I transplanted some bushes around.
Looks so much better now!