Posted: 19/09/2015 at 10:52
I'll put some thought to it but if you consider all hardy members of ranunculaceae and apiaceae as needing winter chill to germinate, you won't go far wrong.
So that's all the astrantias, aconitum, aquilegia, hellebores, (better fresh),
I've sown some foxgloves I picked up in the end of season sale, they have germinated and I'll protect them in the cold GH through the worst of winter.
I really do sow more or less everything as it gets ripe, and leave them outside.