Oliver's True Flowers

True flowers instead of colours? Ey? EY?! Ok, but the flowers weren't chosen at random. Since it may be a pain to recognise them (considering I'm by no means good at drawing things realistically and have probably made it impossible to identify the flowers), here's the list: winter cherries, oleander, candytuft, evening primrose, lettuce, columbine and scabious. Have fun decoding!