1979
Photographed at Shinfield Grange, University of Reading.

1st November 2008
Photographed at the Royal Horticultural Society's garden, Wisley.

15th May 2010
Photographed at the Royal Horticultural Society's garden, Rosemoor.

26th October 2011
Photographed at Myddleton House.

23rd June 2012
Photographed at the Eden Project.