‘Webb’ is described as an improvement of ‘Grandiflora’ with primarily sterile flowers and a uniform, broad-conical head. Flowers are pure white and age to purplish-pink. This cultivar flowers later with green buds just starting to emerge in early July.
The huge mostly sterile panicles that I cut each year age to cream with touches of purplish-pink and green undertones as they age. They are quite beautiful and remain so for about a year after being cut.

Gardens found in the 28 pre 2000 surveyed:   WR

Gardens found in the 10 surveyed in 2010: ESV NAN JCR AW

UKPlant Finder 2012: Not Listed. (listed by Peter Zwijnenburg 1999 & Arboretum Wassland 2001)