Invasive Plants & Insects

Japanese Knotweed (Reynoutria japonica)
Invasive in the Spotlight: Japanese Knotweed
Japanese Knotweed (Reynoutria japonica) is an extremely fast growing invasive herbaceous plant in the buckwheat family (Polygonaceae). Native to ... Learn More
Bittersweet climbing over native trees and shrubs. Photo by Kristin Prince.
Invasive in the Spotlight: Oriental Bittersweet
Oriental Bittersweet (Celastrus orbiculatus) is a deciduous, woody, perennial vine native to China, Japan and Korea, that was brought to this country ... Learn More
Photo by Rob Routledge, Sault College, Bugwood.org
Invasive in the Spotlight: Multiflora Rose
Native to Japan, Korea, and eastern China, multiflora rose (Rosa multiflora) was introduced into the United States in 1866 as rootstock for ornamental... Learn More
Japanese barberry by Amy Watson
Invasive in the Spotlight: Japanese Barberry
Japanese Barberry (Berberis thunbergii) is deciduous, multi branched shrub that is native to Japan, and is often used as an ornamental shrub in the la... Learn More
Burning bush (Euonymus alatus)
Invasive in the Spotlight: Burning Bush
Burning bush (Euonymus alatus) is a deciduous shrub native to Asia that has become well established in New Hampshire as well as throughout parts of th... Learn More
Brown marmorated stinkbug
Getting rid of stinkbugs
Insects that look like stink bugs are showing up inside my house. What are they and what should I do to get rid of them?
Insects that look like stink bugs are showing up inside my house. What are they and what should I do to get rid of them? Learn More
Tree of heaven
Invasive in the Spotlight: Tree of Heaven
Tree of Heaven (Ailanthus altissima) is an aggressive invasive tree species native to China, that has found its way into disturbed habitats and urban ... Learn More