European buckthorn – Rhamnus carthartica

What is it? The European buckthorn, common buckthorn, or just buckthorn, is an invasive flowering tree native to Europe that was introduced in the 1880s to Canada, and has since spread across the country, becoming widespread throughout eastern Canada by the 1900s. They remain common across Ontario, having been naturalized in many regions and areContinue reading “European buckthorn – Rhamnus carthartica”