This is Iris kookeri with a limited distribution in the Gulf of St. Lawrence region (Canada). Last year was sold as Iris setosa! because we weren’t sure about identity – good deal for those who got it :)
Germination: sow right away during late fall or in the spring after 3 months of cold-moist stratification. Some sources recommend scarification to improve water imbibition but this is not necessary for fall sowing.