Biological control of Garlic Mustard using Ceutorhynchus weevils.
Garlic mustard, Alliaria petiolata, is a major invasive woodland weed in North America that is native to Europe. We are investigating the host specificity of two European weevil species that attack it in its native range – Ceutorhynchus scrobicollis and C. constrictus. These investigations focus not only on laboratory evaluations of non-target plant consumption but also on biological, ecological and climatological factors that could determine the geographic spread of weevils once released.