Blue mason bee
Osmia caerulescens
insectView on iNaturalist
Metallic blue mason bee, slightly smaller than honeybee. Excellent early-season pollinator for fruit and spring flowers; nests in plant stems and cavities.
Plants that support Blue mason bee
1 plants
Hooker's Onion
Allium acuminatum
geophyte
Early spring pollen collection for brood provisioning
Bay Area native