Good to know. I haven't dug Rollercoaster Rush up yet so I'll hold off a bit.

After the winter of 2016, one of my SEV's didn't come up until July. I was sure I had lost it. Now this spring, it was one of the first up, and it is the best it has ever looked. Go figure!

Spacecoast Sea Shells died for me also.

Up here in Zone 2-3, I was surprised to see I only have three evergreens left:
Canadian Border Patrol
Velveteen
Jolyene Nichole
All others gone due to under performance. I haven't purchased an evergreen in a long time. I have many semi-evergreens and dormant. We regularly get temps in the -40 degree range, but usually have good snow cover. It's not our winters that kills plants, it's our springs. It gets nice and warm, starts things growing, then WHAMMO, a hard frost, things rot, sob.