Starting perennials or biennials in the autumn

I seem to have limited success with Late summer/Autumn sowing perennials, sometimes just poor/no germination other times seedlings arrive but then die off over winter. I don't really want to sow indoors in Spring as I have so much other stuff going on then. Anyone have good methods that work for this? Do you sow indoors, under glass, outside in containers, outside in ground. When do you sow? Do you prick out and keep protected over winter indoors/ghouse or plant out or just leave in pot outside. . Examples of perennials I may try later this year are Knautia, Centaurea, Verbascum, Lynchnis, Hollyhock, Lupin, Eryngium, Aubretia. Let me know your tips please.

Sow them all now, I often start in a prop them when germinated cover with a plastic lid at night in the GH

#TMTs eryngium I started in Jan? After the seed swap at xmas, I remember I couldn't wait....all flowered this year though

#holyhocks I did in June, but I would give a few a a go now.