There are a bunch of different ways you can help out the local bee populations. You can plant your own native garden, add flowers to your garden, participate in citizen science projects, and much more!
Bonus- unlike the invasive (but helpful!) European honeybee, which you're used to seeing, most native been do not sting, swarm, or build hives. They are generally solitary and non-aggressive.
info on pollinator gardens and citizen science projects
"Bees: responsible for every 3rd bite of food."
Learn about plants native to California and how you can help maintain local biodiversity