The flower symbolism associated with poppies is beauty, magic, consolation, fertility and eternal life. The Egyptians included poppies at funerals and in burial tombs. The Greeks used poppies in the shrines of Demeter, goddess of fertility, and Diana, goddess of the hunt. Poppies denote sleep, rest and repose. In modern times, poppies have been associated with Flanders fields as an emblem of those who died in World War I.
The poppy survived during the war when little else did and so is also a symbol of hope.