Native butterfly and bee fauna in California’s Central Valley have experienced significant declines in the last few decades. Farmers, non-profits, and local, state, and federal agencies in the region are partnering to address habitat losses for these insects by restoring native plants to crop field margins and waterways. We used our 6-year dataset of bee and butterfly counts at 18 habitat restoration sites in farmland in the Sacramento Valley to examine how planting design and plant species composition relate to native bee and butterfly abundance and butterfly community composition. As expected, native bees were more abundant in planting designs that resulted in higher floral density. Native bees exhibited evidence of preference for some native and some introduced plant species and these preferences varied by season. Though full analysis is pending, it appears that butterfly species' richness and abundance was more tied to landscape-scale factors and presence of host plants than to richness of blooming or non-blooming plants. Our findings underscore the need to use planting designs that increase the density and seasonal abundance of floral resources, to widen the variety of butterfly host plants used, and to thoughtfully manage introduced species in these restoration efforts.