Eliminating invasive plants without the use of harmful herbicides is a perpetual challenge for gardeners and landscapers. Invasive species are defined as “not native to a particular ecosystem and whose introduction causes, or is likely to cause economic or environmental harm, or harm to human health.” One such species frequently seen in the Northeast landscape is mugwort (Artemesia vulgaris). Like many invasives, it thrives in disturbed areas and out-competes native species.