First standard dwarf bearded iris to bloom in my garden

The first standard dwarf bearded iris (SDB) to bloom in my garden in 2017 is 'Zippo'.  Introduced by Ginny Spoon, 'Zippo' has striking white beards which stand out against the deep violet flower.  The color is much darker than it appears in the picture.  Although listed as a repeat bloomer in zone 6, it has not rebloomed in my garden.