The Franciscan Crown (or Seraphic Rosary) is a rosary consisting of seven decades in commemoration of the Seven Joys of the Virgin, namely, the Annunciation, the Visitation, the Nativity of Jesus, the Adoration of the Magi, the Finding in the Temple, the Resurrection of Jesus, and the Assumption and Coronation of the Virgin. The Franciscan Crown has been called the Franciscan Rosary, the Seraphic Rosary or the Rosary of the Seven Joys of Our Lady. The practice originated among the Franciscans in early 15th-century Italy.
The Franciscan historian, Father Luke Wadding (1588-1657) dates the origin of the Franciscan Crown to the year 1422. In 1442 an apparition of the Blessed Virgin Mary took place in Assisi, to a Franciscan novice named James. As a child, he had the custom of offering daily the Virgin Mary a crown of roses. When he entered the Friars Minor, he became distressed that he would no longer be able to offer this gift. The Blessed Virgin appeared to him to give him comfort and showed him another daily offering that he might do: to pray every day seven decades of Hail Marys, meditating between each decade on one of the seven joys that she had experienced in her life. Friar James began this devotion, but one day the Director of Novices saw him praying and an angel with him who was weaving a crown of roses, placing a lily of gold between each of the ten roses. When the novice had finished praying, the angel placed the crown upon him. The Director asked Friar James what this vision meant. After hearing the explanation, he told the other friars and soon this devotion spread throughout the Franciscan family.
Here is a guide for praying the Franciscan Crown.