Many species are native to North America. Many of them are considered very weedy. So far, the few I have are well behaved.
Erigeron compositus var. discoideus
I bought this one as a rockery plant. It is going to disappear anytime; the voles are active underneath it.
Erigeron speciosus ‘Azure Fairy’
These plants are long blooming, and need support to look presentable. I love the puffy mass of flowers and their not so boring colour. Apparently, the ‘Azure xx’ is a series and probably the same plant but sown from seeds and the colours are somewhat variable. I should try to sow my and perhaps select a better ‘blue’.
Erigeron x ‘Canary Bird’
I acquired this for the rockery garden; so far so good.