Links
Alien Plant Working Group - Common Buckthorn - fact sheet and photo
Brooklyn Botanic Garden - BBG bibliography for Rhamnus - literature references
Environment Canada - Common Buckthorn - fact sheet, illustration, and North American distribution
Illinois Nature Preserves Commission - Vegetation Management Guideline: Exotic Buckthorns - detailed fact sheet, photos
Maine Natural Areas Program - Common Buckthorn and Glossy Buckthorn - fact sheet and photos
Minnesota Department of Natural Resources - The Trouble With Backyard Buckthorn - Magazine article
Minnesota Department of Natural Resources - Buckthorn (Common and Glossy) - brief fact sheet and photos
Minnesota Department of Agriculture - Buckthorn and its Control - fact sheet
Minnesota Department of Agriculture - Biological Control of Buckthorn: New Research Begins - fact sheet with photos
New England - Invasive Plant Atlas of New England - Rhamnus cathartica (Common Buckthorn, European Buckthorn) - fact sheet and photos
Ohio Department of Natural Resources - Fact Sheet 2 - Glossy Buckthorn & Common Buckthorn - fact sheet and photos
Ontario - Federation of Ontario Naturalists - Natural Invaders - basic information, native substitutes
The Nature Conservancy: Wildland Weed Management and Research Library - ESA for Rhamnus cathartica and R. frangula - detailed fact sheet and photos
USDA - Agricultural Research Service - Common Buckthorn: Alternate Host for Oat Crown Rust - links
USDA PLANTS Database - PLANTS Profile - Rhamnus cathartica - characteristics, photo, US distribution
US Geological Survey: Northern Prairie Wildlife Research Center - Species Abstracts of Highly Disruptive Exotic Plants: Common buckthorn at Effigy Mounds and Pipestone National Monuments (Minnesota)
Wisconsin Department of Natural Resources - Common Buckthorn - fact sheet and photos
WI - Freckmann Herbarium, UW-Stevens Point - Rhamnus cathartica - characteristics, photos, Wisconsin distribution
Wisconsin State Herbarium: Wisconsin Vascular Plants - Rhamnus cathartica - characteristics, photos, Wisconsin distribution
WI - University of Wisconsin - Stevens Point - Buckthorn (Rhamnus spp.) Distribution Within a Central Wisconsin Nature Preserve, 2001