Fertile florets deep blue, Sterile florets very pale blue Gardens found in the 28 pre 2000 surveyed: No gardens found. Gardens found in the 10 surveyed in 2010: AW UKPlant Finder: Last listed in 2004
A taller cultivar with almost luminous medium sized flowers, with both fertile and sterile flowers that are a rich blue (1.5 to 2m) Gardens found in the 28 pre 2000 surveyed: Mill Cottage Gardens found in the 10 surveyed in 2010: WS UKPlant Finder: 2012 = 3...
Blue fertile flowers surrounded by pale pink sterile flowers Gardens found in the 28 pre 2000 surveyed: LHS UKPlant Finder 2012 = 1 Nursery (as yezoensis ‘Hime-gaku’)
