This year we are adding mason bees to the homestead. A good friend has gifted me with four tubes of bees and their house is ready and waiting. Once daytime temperatures are stable at around 13 degrees Celcius (55 degrees F), I will place them outside to hatch. For now, they are hibernating in the fridge.
They will require nectar sources nearby as well as a mud source to lay the next generation of bees once they emerge. We definitely have the mud, but not a lot of flowers yet, so until conditions are perfect, we wait.