A Intersectional hybrid by Roger Anderson in 1999. There is some confusion over the true name of this plant. Reiner Jakubowski the APSregistrar has the original registration document from Roger Andersonwhich incontrovertibly shows that ‘Kopper’is the intended spelling.Parentage Martha W X Golden Era. Like most intersctionals this is a vigorous plantthat eventually forms a large clump. Plant Source: Binny.