I'm sure some will worry about disease and slugs but it sounds a sensible arrangement to me. I do that sort of thing all the time with no problems
I've enlarged that second one, not gaillardia but now wondering about Heliopsis
grow from what to what in 4 weeks?
seed to flower? doesn't sound likely
seed to slug dinner time? that sounds more possible
agree with above comments, any further 'settling' is likely to make things worse, not better
the first looks like a gaillardia, possibly both are,I can't see the leaves and flower buds so well on the second
a good decision Anni
I'd put them all out. Maybe some won't flower til the next year but they'll get there
I think they're lovely, more delicate looking than the native Oenothera biennis. But I can't keep them without taking some action.
Chucking it down here, no gardening today
I'd save some of the seed and set it in pots. I don't find all the species self seed quite as well as Oenothera biennis.
Some of the others will flower in the first year but aren't reliably hardy. I think this may be one of those.
Oenothera but not biennis.
There are lots. Could be one of the paler versions of Oenothera versicolor. The leaves are right