blue vervain Directory References Discover 12 Novels Considered the “Greatest Book Ever Written” What Is the Emoluments Clause? Poker Hands Ranked Who Invented the Internet? Why Do Some Cicadas Appear Only Every 17 Years? 9 Memorials and Monuments in the United States Is Cinco de Mayo Mexico's Independence Day? Contents blue vervain plant Ask the Chatbot a Question Ask the Chatbot a Question Also known as: Verbena hastata Learn about this topic in these articles:Verbena In verbenaThe blue vervain (V. hastata) reaches a height of 1.5 metres (5 feet) and produces spikes of blue to purple flowers. The Eurasian species V. officinalis, the herb of the cross, was once considered a medicinal plant.Read More
