Poppies are sometimes used for symbolic reasons, such as in remembrance of soldiers who have died during wartime.

Poppy flowers have 4 to 6 petals. The petals may be almost any color, and some have markings. Before blooming, the petals are crumpled in the bud, and as blooming finishes, the petals often lie flat before falling away. A whorl of stamens is in the center of the flower.

The pollen of the oriental poppy, Papaver orientale, is dark blue. The pollen of the field poppy or corn poppy (Papaver rhoeas) is dark blue to grey. Bees use poppies as a pollen source.