Moina Michael (August 15, 1869-May 10, 1944) was a U.S. professor and humanitarian who conceived the idea of using poppies as a symbol of remembrance for those who served in World War I.
The Flanders Fields Red Poppy was first created as a symbol of Remembrance by an American teacher, Miss Moina Belle Michael.
Moina described the way that the idea for a memorial emblem of the red poppy came to her in a moment of revelation. Moina's fascinating autobiography, ”The Miracle Flower, The Story of the Flanders Fields Memorial Poppy” was published in 1941. Moina dedicates the book to the late Colonel John McCrae, whose poem ‘In Flanders Fields’ was the inspiration for her idea of the Flanders Fields Memorial Poppy.
As a result of Moina Michael's tireless campaigning, her complete dedication to the cause and the inspiration her idea gave to others, the delicate flower of the red field poppy has become an internationally-recognized symbol of Remembrance and welfare for war veterans.
http://www.greatwar.co.uk/people/moina-belle-michael.htm