Ground-nesting bees

The holy grail of bees.

Consider that 70% of bees live underground. 

Well.... where are they??

Ground-nesting bees can be pretty hard to find.  Most are dispersed in solitary holes that are well-hidden... unless you see a bee coming or going, the holes are invisible.

Unless of course, you are down on the ground like a bee nerd, looking for them.

To encourage ground-nesting bees in your yard, keep some patches of well-drained soil with sun exposure BARE and UNDISTURBED - no tilling and no mulch.

And most importantly... DO NOT USE PESTICIDES IN YOUR YARD.  Consider alternatives.