Hi Bellarosa. Yes these are all native prairie plants (my entire design for this project uses native prairie plants) that will grow and thrive in Illinois in clay or loam in zone 5. The main players are little bluestem grass, Phlox paniculata `David', aromatic aster `October Skies', stiff goldenrod, and your fav the blue one is pitcher sage Salvia azure pitcheri `NeKan' (a paler blue than the straight species that was found on the Nebraska/Kansas border hence the name)

Thanks Lauren!