Pollen and Comb

Workers have been returning with different colours of pollen. They seem to gather one colour at a time, presumably only from one plant or tree, rather than mixing their drinks. I have looked but cannot find a flower with this colour pollen. Any suggestions as to what flower it might come from?

The good news is that the Queen ate her way out through the candy door to her cell, and joined her subjects.

The bad news is that the workers are building combs (first inspection 5/1) everywhere as well as on the nice (expensive) wooden frames I have installed for them.  Now, 5/7, this “Burr Comb” has a yellow tint showing they’ve coated it with a little Propylis or glue. In the bottom of some cells I now see the first “C” shaped pupae starting to hatch.

The other good news is that we are now in the beeswax business.