During the French Revolution of 1789–1794, most of the Sisters of St. Joseph were dispossessed and scattered throughout France. Many were imprisoned and several were guillotined. Among the prisoners was Jeanne Marie Fontbonne, known as Mother St. Jeanne, superior of the Community in Monistrol.
After the Revolution, trees were planted as a symbol of peace. The tradition continued after World War I. Le Puy planted a tree in the public square where the guillotine had once stood.