Give your solitary bees a safe place to lay their eggs for the winter. This bee house is a perfect way to "naturescape" and encourage pollinators to your garden. Overview Provide a home for one of nature's best pollinators. Of the more than 20,000 species of bees, two of the most common are the blue orchard bee and the horn-faced bee. One-half to two-thirds the size of a honey bee, these passive bees live only six to eight weeks but lay eggs in this house.