Rosemary Malfi (she/her) serves as the policy lead for the pesticide program at the Xerces Society, where she is working to support and advocate for policy solutions to reduce pesticide use. Rosemary holds a Ph.D. in environmental sciences from the University of Virginia (2015) and completed postdoctoral research positions in entomology at UC Davis and in Biology at UMass Amherst. Her research focused on the influence of food resources and disease on bumble bee populations.

Before coming to Xerces, Rosemary worked at the Northeast Organic Farming Association (NOFA/Mass), where she spent two years coordinating a grassroots network of community groups dedicated to pollinator protection and pesticide reform in Massachusetts. Rosemary lives with her family on the land of the Massachusett people in Salem, where she enjoys gardening, bird-watching, and raising two young nature lovers.