Bumble bees (genus Bombus) are an economically and ecologically important group of pollinators that have been negatively impacted by habitat loss, pesticide use, pathogens and climate change. The California Department of Fish and Wildlife considers six bumble bees Species of Greatest Conservation Need (SGCN), and four of those are candidates for listing under the California Endangered Species Act. Further, there is little available baseline data on the population abundance, distribution, and floral preferences of most species. The California Bumble Bee Atlas (Atlas) community science initiative was launched in 2022 to systematically, non-lethally survey bumble bees in all parts of California. Atlas volunteers have documented over 10,000 bumble bee observations and their associated forage plants. In this poster, using data collected to date through the Atlas, we explore forage plant preferences of California’s native bumble bees. We concentrate on plants visited by four bumble bee SGCN, the change in forage plant species from early to late season, and diversity of native forage plants used. By identifying floral associates that bumble bees rely on for nectar and pollen, we can help inform habitat conservation and restoration of these important pollinators.