Just out of interest, I have some seeds that have sprouted outside just this week, despite the freezing weather (down to -5°C at night).
I will be keeping a note as to whether they survive or not and will let you know in Spring what happens .
These were seeds just sown directly without stratifying as an experiment to see what works here as I had plenty of spare seeds (and can replicate these crosses).
The ones just sprouted were Baby Blues x Star Child
Aquamarine x Star Child