Fully double, creamy white flowers with a green bar and yellow anthers in the spring, single in the autumn. Tepals become pure white with age. Occasionally an entire plant will flower only single in early summer. 'Grefve' is the old Swedish spelling for 'greve', meaning Count.

Group: Early large-flowered group
Approximate height: 2.0 - 2.5 metres
Flowering period(s): May Jun Aug Sep
Pruning: Light prune (Group 2)
Raised by: Kjell Bolinder Klematis
Country of origin: Sweden
Date raised: r1995 f2002 n2005 i2006
Parentage: Ivan Olsson x unknown
Other name(s): None known

Further detail:

Flower diameter: 12-14cm
Tepals c50; long-pointed, overlapping