Amur honeysuckle (Lonicera maackii) is native to temperate Asia in northern and western China (south to Yunnan), Mongolia, Japan (central and northern Honshū, rare), Korea, and southeastern Russia.
In the forests of the eastern United States; latter, it has become an important invasive species.
"Spread of this plant is illegal or controlled in some areas of the United States due to its well documented invasive character. It is listed as a "invasive, banned" species in Connecticut, "prohibited" in Massachusetts, and a "Class B noxious weed" in Vermont. It is also officially listed as an invasive species by government agencies in Wisconsin and Tennessee."
"While honeysuckle fruit is abundant and rich in carbohydrates it lacks the high-fat and nutrient-rich content that most of our native plants provide migrating birds. Wherever invasive honeysuckle shrubs displace our native forest species there is a huge potential impact on these migrating bird populations due to the reduction in availability of native food sources."