This is a Proven Winners selection. According to their information, the flower is a single bright red orange color in the Spring but matures to a bicolor with yellows as the season progresses. This is a new color for bidens.
Name: Suzanne/Sue Sebastopol, CA (Zone 9a) Sunset Zone 15
This would be a nice comment added to the actually database entry it self rather than as a thread attached to the image. If you click on the entry name above the image, on the left side is the 'Post a comment'.