Mixed seeds set likes
A sunny spot
They’ll all grow in light shade, but you’ll get more growth if you put them somewhere that gets full sun.
Moist soil
Keep the soil well watered to help the seeds germinate and grow. Check pots daily in very hot weather.
Haircuts
Chop off parsley as and when you need it. It will just keep growing back. For the Rudbeckia and Nigella, pinch off any wilted flowers to encourage new blooms.