Yellow single to semi-double—herbaceous x tree hybrid. Pollen parent. Golden Era. Seed parent. Martha W. First bloomed 1987. Divided 1990—height 28-32″. Semi-double yellow, excellent plant habit. Every now and then, a bloom or two will open half lavender, half yellow. A real novelty. These blooms are the most photographed flower in the garden. Very much like Bartzella, but not as double or not as dark in color.