We had a very productive afternoon preparing beds for annual seeding, moving plants, edging beds - and we got to see pollen grains up close with a borrowed microscope. This was very successful using just natural light. Here are some other photos of pollen from an MSc student.
We looked a snowdrop, primrose and hellebore pollen, which are oval; round and yellow; and rugby ball shaped with pits and a seam vsisible down one side: here is a higher magnification photo of hellebore pollen.
We moved some of the wallflower and sweet william plants into blocks in the newly edged narrow beds, which are apparently best for bees - not so far to fly between flowers.