I think this is a good illustration of why some fancy cultivars are not necessarily good for pollinator gardens. While not a native, I’ve seen many pollinators use Hibiscus syriacus as both a pollen and a nectar source. But the double-petaled version was clearly not as productive as the other. Cultivars, including nativars, that have been enhanced to please the human eye by changing colors, shapes, or sizes may not be as beneficial to pollinators as unaltered forms. While some changes, such as longer bloom times or more flowers, may be helpful, changes to flower structures and colors may be very problematic. When planting for pollinators, I think it’s probably best to get plants that are as close to wild populations as possible. Certainly, I’d avoid double-petaled cultivars or drastic changes in color.