Many gardeners know the key role milkweed (Asclepias) plays in bringing back declining numbers of monarch butterflies. But other species of Lepidoptera, other butterflies and moths need help, too.

University of Delaware entomologist Doug Tallamy's research has identified “keystone” plant species that make up the foundation of many U.S. ecosystems by producing food for native insects, thus ...

University of Delaware entomologist Doug Tallamy’s research has identified “keystone” plant species that make up the foundation of many U.S. ecosystems by producing food for native insects, thus ...