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en.wikipedia.org/wiki/Rhamnus_(genus)

Rhamnus is a genus of about 110 accepted species of shrubs or small trees, commonly known as buckthorns in the family Rhamnaceae. Its species range from 1 to 10 meters tall (rarely to 15 m) and are native mainly in east Asia and North America, but found throughout the temperate and subtropical Northern Hemisphere, ...

www.dnr.state.mn.us/invasives/terrestrialplants/woody/buckthorn/index.html

Buckthorn. Common buckthorn (Rhamnus cathartica) was first brought to Minnesota from Europe in the mid-1800s as a very popular hedging material. Shortly after its introduction here, it was found to be quite invasive in natural areas. The nursery industry stopped selling it, but many buckthorn hedges may still be found in ...

dnr.wi.gov/topic/invasives/fact/commonbuckthorn.html

Biological, ecological and regulatory information on the invasive plant common buckthorn, Rhamnus cathartica.

www.nyis.info/index.php?action=invasive_detail&id=20

Background. Common buckthorn (Rhamnus cathartica) is a small deciduous tree or large shrub that can grow to six meters in height. It has dull green oval or egg shaped leaves and is easily identified by the small thorns at the tip of its branches . It is also known as European buckthorn, European waythorn, and Hart's thorn.

fmr.org/buckthorn-how-can-a-shrub-be-so-harmful

European buckthorn (also called "common buckthorn" or just "buckthorn") is a tall , understory shrub brought to North America in the early 1800s as an ornamental shrub, primarily to serve as hedges. But this woody plant escaped from yards and landscaped areas long ago, invading forests, oak savannas and other natural ...

www.invasivespeciesinfo.gov/plants/buckthorn.shtml

Jan 9, 2018 ... A species profile for Common Buckthorn from USDA's National Invasive Species Information Center.

forestry.ohiodnr.gov/buckthorn

Common Buckthorn, also known as European Buckthorn, is an invasive shrub found throughout Ohio, the greater Midwest, and a large portion of the eastern United States. Its ability to colonize fence rows, fields, and neglected areas -- coupled with its tough constitution and rapid growth rate -- allows it to quickly produce ...

www.buckthornbaggie.com/problem

Buckthorn is native to Eurasia but has been commonly planted in this country as a hedge and for wildlife food and cover. Some states have made it illegal for nurseries to sell and other states have not. It was widely recommended for conservation plantings in the Midwest until its invasive tendencies became apparent; ...

mnfi.anr.msu.edu/invasive-species/CommonBuckthornBCP.pdf

Common buckthorn is native to Eurasia and was introduced to North America in the 1880s as an ornamental plant. Its abundant fruit is dispersed by birds and it spreads rapidly, replacing native vegetation and lowering species diversity. Like many non-native shrubs, common buckthorn leafs out early in spring and retains its ...