Spotted water hemlock (Cicuta maculata). Photo by Mary Keim

Flower Friday: Spotted water hemlock

Spotted water hemlock is a robust herbaceous perennial with a bad reputation of being one of the most toxic plants known to man. It occurs naturally in freshwater swamps, marshes and floodplains, and along riverbanks and roadside ditches. It blooms spring through fall, attracting many species of bees, wasps and butterflies. It is a larval host plant for the black swallowtail (Papilio polyxenes).