Posted: 29/03/2017 at 08:29
Those are easy plants and reproduce themselves. Cowslips and primroses seed themselves into grass but I wouldn't try and start them by seed in grass, get a couple of plants to start. Seed is a bit hit and miss in grass, except Yellow Rattle which you can sow in grass in autumn, germinates in spring and is semi parasitic on grass, reducing its vigour. Has to be seen to be believed.
One thing you can't do in grass is have one of those bright coloured annual mixes, poppies, cornflowers etc. Those are plants for cultivated soil, they don't grow in grass