First, much of the problem with bee disease is the practice of taking all the
and comb from "traveling" bees, those that are brought in by contractors to
crops. When all the honey and combs are taken the bees are left to die. The next
year the contractors go south and buy new queens to stock their hives. This has
to a highly inbred line of bees originating from a few sources. This is called
"founder effect" genetics where poor disease resistance is the outcome.
I have discovered that wood bees are happy making nests in the ends of bamboo
laid horizontally. It is a good way to encourage them to hang around. Just lay
roll of cheap ($16 a roll) bamboo up high somewhere sheltered.
Somewhere between zone 5 and 6 tucked along the shore of Lake Michigan
on the council grounds of the Fox, Mascouten, Potawatomi, and Winnebago