My main interest, perhaps even more than Hardy Geraniums, is Erodiums.

This is a seedling from 2022 that actually over-wintered for me here in central Ontario zone 4. It did not flower the first year, and this is the first flower in 2023. It has a nice fine cut foliage that reminds me of Erodium carvifolium.

That is a very nice plant , I really like the leaves they look different than any of mine ( a lacy look)
I have not tried growing any from seed yet but would like to try some day.
I currently have a couple minis inside under lights for the winter,they have just stopped blooming.