Hm... Erigeron (annuus?) + Centaurium (erythraea?) + Campanula (pesicifolia?)+ Linaria (vulgaris?) +... + Inula sp.
1) Erigeron annuus - perhaps 2) Centaurium erythraea - think that's it 3) Campanula persicifolia - ok; i see there are many in this genus 4) Linaria vulgaris - ok 5) Krigia - definitely looks like it (Krigia viginicaperhaps), weird it's not in the Croatian Flora, though (http://hirc.botanic.hr/fcd/) 6) Doronicum - looks like it, but I can't find a matching species I thank you again for your time and effort! Thanks!!!