That sure had to be difficult to watch all of your work being destroyed by Mother Nature. I thought I had a bad thing with the hail storm, but it was nothing in comparison to your losses. Not only the loss of your time and effort, but the financial cost of the irises as well. Good thing you are young and resilient.
On the bright side, you sure had some wonderful seedlings that survived, so they must be fighters! A good thing when trying to develop hardy plants for our climate.