Bluebells have appeared in my garden faithfully every spring since we first moved into our home. They came gratis. Originally I thought they were the native bluebells famous in English countrysides, but no, my bluebells, and white bluebells and pink bluebells are Spanish hybrids and therefore have no claim to fame. They are beautiful nontheless, and the bees enjoy them too. Apparently, the true English bluebell (Scilla nonscripta)  has creamy colored pollen.  You can see the yellow to creamy-yellow swatches on the bottom left of the image below. The swatches represent the various tones of pollen loads collected from honeybees that have foraged on English bluebells.   The blue-green swatches on the right represent the colors of pollen loads collected from bees that have foraged on Spanish bluebells. Quite a difference! The blue-green dust in the image above is the anther pollen I collected from the Spanish bluebells in my garden. Although the pollen loads from honeybees will always be different in tonality from fresh anther pollen (because honeybees mix nectar or honey with the pollen thus resulting in tonal changes), there is still quite a similarity between the pollen dust and the lightest sample in the swatch.