The florist chose varieties he thought would resonate both with Dior's history (red roses) and the designer's modern aesthetic (blue delphiniums and goldenrod).
Another of Sellers's shows championed Constance Spry, the social reformer, author and florist who educated millions of British people on the art of beautifying their homes in the mid-20th century.
"(Years ago) I would get calls from (engaged couples of different cultural or religious traditions) who were desperate and sad ... and after a ceremony I would secretly hear a family member or maybe the florist say (about the wedding couple), 'Oh, that's not going to work, ' " Macomb says.