I think they are wild flowers!
1 lookslike verbascum violetta
2 some sort of campanula
3 looks like foxglove flower but leaves are wrong, maybe isoplexis??
what country are you in?. I dont recognise any of these as british wild flowers.
Lincolnshire! I planted 2 packets of seeds, one was mixed wild flowers and the other mixed perenials. I lost the labels which told me which was which.
The last one is Centaur Alba, you do see it growing wild but you can sometimes buy it in garden centres. It grows in crevices of walls or anywhere hot and sunny.
Thanks everyone for those suggestions. The last one could be oregano as it does smell herby. Number three is not a foxglove but could be a penstamon as the leaves seem the same. Still not sure about number four. All I know is that I seem to have a lot of these!