Wondrous Zinnia

The Bellevue Demonstration Garden in my neck of the woods is featuring an entire row of zinnias, flowers I never paid much attention to until now. The specimen above is already fully matured with the outer (ray) florets beginning to wilt, but what struck me was the crown of disk florets that even the bee was impressed with. They continue to flower like that, each ring blossoming above the spent one below, until the disk looks almost like a pineapple.