AM 1978

A large deciduous shrub with peeling bark, coarse leaves and flat heads of white flower heads with sterile florets hanging on long petioles,

Gardens found in the 28 pre 2000 surveyed:   LHS EBG KEW GN WAK CBG LBG JK WIN LAG TG TR MS WR

Gardens found in the 10 surveyed in 2010: LHS ESV KAL JCR ESV KAL JCR EBG WS HIL ESV ABG AW

UKPlant Finder: 2012 = 7  nurseries