I put the photos in succession of maturity, from the newest to the oldest, and macro view to wide angle shots.
Above photo shows the umbel when the nectar is just slightly produced, only staining the corolla surface.
This is the two-stage form, some are open already, while other flowers are of another stage of maturity.
This is another umbel showing the details of the immature buds.
The above stage is already showing some hues of the anticipated colors of the eventual blooms, this stage is now very susceptible to herbivores or insects attacking plants. Of course, it looks so luscious to the taste buds, seem very inviting.
Necta tasting, anyone?