Bee nesting habitat
detail of part of a bee "condo" at the University of California Native Bee Garden in Berkeley
When we went on the tour of the Native Bee Garden, we were shown the bee "condo". Different kinds of potential nesting materials, such as untreated wood and large pine cones, are stacked in hopes that bees will use them for their nesting habitat.
We told Carol about the bee house with bamboo tubes that we hung up on the backyard fence. So far there are no takers for it, instead I have brushed some spider webs away. She said we shouldn't feel bad because they haven't noticed any bees using their bee condo, either.
But the Native Bee Garden bee condo was only put together this year in the Spring. And we just put up our bee house late Spring. So we'll see what happens.
Bee condo at the University of California Native Bee Garden in Berkeley
Read about creating bee nesting habitats in the "California Bees & Blooms - A Guide for Gardeners and Naturalists" by Gordon W. Frankie, Robbin W. Thorp, Rollin E. Coville, and Barbara Ertter