Anton Ptak wrote, "Debbie's Gold died to the ground and the Harlayne has a
wee bit of live growth above the graft union, but yet to see any new growth.
Both of those varieties should have made it through the one time low
of -20F."
I had a similar experience with Debbies Gold not making it through a
mild (-25) Winter. My Wescot and Brookcot are in full bloom now after a -32
Winter................a neighbor claims -41.