Ernie Janes / Opium poppy (Papaver somniferum) flower bud opening. Cultivated in garden.

David Perpinan / Close-up of an Opium poppy (Papaver somniferum) in flower, Cuenca, Castile-La Mancha, Spain, June.

Gary K. Smith / Opium poppy (Papaver somniferum) seed heads, England, UK, June.

Gary K. Smith / Opium poppy (Papaver somniferum) dried seedheads.

Gary K. Smith / Opium poppy (Papaver somniferum) dried seedheads.

Gary K. Smith / Opium poppy (Papaver somniferum) dried seedheads.

Andres M. Dominguez / Opium Poppy (Papaver somniferum) on flower. Sierra de Grazalema Natural Park, southern Spain, June.

Pascal Pittorino / European honey bee (Apis mellifera) collecting pollen from Opium poppy flower (Papaver somniferum), in botanic garden, Var, Provence, France, May.

Paul Harcourt Davies / Opium Poppy (Papaver somniferum) on flower near Sorano, Tuscany, Italy, June

Albert Lleal / Opium Poppy (Papaver somniferum) dry seed pods, Spain

Bengt Lundberg / Opium poppies (Papaver somniferum) and Common poppies {Papaver rhoes) La Mancha, Spain

Bengt Lundberg / Opium poppies (Papaver somniferum) La Mancha, Spain