With huge dense white panicles that weigh down the thin stems. Found by T A Mc Daniel in a churchyard in Alabama USA before 1985

Gardens found in the 28 pre 2000 surveyed:  WIN WS TR MS WR

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

UKPlant Finder: 2012 = 15 nurseries