Marigold (Calendula officinalis) is a traditional medicinal plant (e.g. wound healing) but can also be simply used for food coloring (e.g. for cheese and butter).
The pollen was photographed in a scanning electron microscope and the image was colored with artificial intelligence (AI & Deep Art).
If you want to know how big each pollen is:simply measure them yourself in strucTEM-Measure by clicking on the image: