The past season was not a good one for mason bees on southern Vancouver island. Cool temperatures delayed hatching and there was poor fertilization in some of the locations . I had mason bee houses stocked with Phragmites tubes and mason bee cocoons in eight different farms of neighbours.
As I have been cleaning out the tubes and getting the cocoons in the refrigerator for storage, I have noticed a significant increase in a species of native mason bee that is much smaller than the native blue orchard bees.
Another interesting observation. was that at the bottom of the tube below the cocoons in several tubes there was a pocket of the dead but hatched parasitic mono wasps.. I cant explain that one (my best hopes would be that this smaller mason bee cocoon has some super power over the parasitic wasps…lol)
