When the Poppies Bloom Again () is a 1975 Dutch drama film directed by Bert Haanstra. It is based on the book The Nail Behind the Wallpaper by Anton Koolhaas.
The film was entered into the 26th Berlin International Film Festival, but won no prizes. It was also selected as the Dutch entry for the Best Foreign Language Film at the 48th Academy Awards, but was not accepted as a nominee.