which poppies are they?
You'll get loads of seed whatever sort they are, I'd sow some as soon as you havest them and keep some for spring.
The perennials I'd sow in a pot, they're much slower than annuals and get swamped in the garden
Wait til the seed head goes brown then tip it up. If the seeds fall out they're ripe.
Is that the same as Malva moschata alba?
I think a nepeta. N. parnassica is very tall
Lavatera has more than one species and some are annuals. I'm sure it's that family, can we see the leaves please
They're the seed capsules of Cyclamen hederifolium. They need to be ripe to collect but easiest to let them seed themselves
Why don't you tip out the pot, separate up some of the geranium, repot and see what they turn out to be. If it's Geranium x cantabrigiensis i'ts not a weed and comes in several different colours, you might get something nice
If it's Geranium lucidum it is a weed and you will find you have seedlings all over the garden already.
I think it's not a weed
The taller narrow ones are the willowherbs, dump those
Ribes, either odoratum or aureum