My Iris chrysographs are flowering now, I would call this rather late for Irises, rather than early, the only ones still to flower on my garden are some of the enstatas.
They are easy from seed, although there is some variation in colour. I think mine flower the third year from sowing. Mine are growing in full sun, in very well drained soil that at the moment is dust dry, much wetter in winter though, so the total opposite to what is suggested.
Just goes to show how adaptable plants are :)
If they set seed this year, I'll save you some Georgie, if you would like.