I lost about half my mums , 2 heurchera and most of my Moonbeam coreopsis. The last was a shock because it has grown for years. Have one hibiscus that is not growing yet, but it was very late to start last year too. My Double Knockout Rose died almost to the ground, but is doing OK now.
Also planted a lot of new lilies last fall and a number of them didn't grow. The ones I dug up looked like they had rotted. Lost some newly planted daylilies too. It was really a hard winter.