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 will use poppies as a pollen source.

The opium poppy, Papaver somniferum, is grown for opium, opiates or seeds to be used in cooking and baking, eg. Hungarian Poppy seed rolls