Papaver somniferum or the Opium Poppy is a hardy, cool season annual that produces green/grey/blue foliage with jagged edges and a crisp texture, rather like lettuce.
The flowers are held aloft on stiff stalks, being produced in late spring to early summer. Flowers come in many colours from pink to red and mauve as well as white and bi-colours too.
They are cup shaped and can sometimes be double - though the very frilled Peony Poppy is a separate variety in its own right.
There is also a Papaver somniferum laciniatum group that has very frilled and doubled flowers and deeply lobed petals making for a rather PomPom-like look.
They attract bees to your garden which are the main pollinators.
Good in mixed borders and as cut flowers.