07/29/2026
W**D WATCH WEDNEDAY, where we shine a spotlight on w**ds commonly found across Guernsey County.
Common burdock (Arctium minus) - If you’ve ever spent an afternoon picking stubborn, prickly burs out of your dog’s coat, livestock wool or your own shoelaces after walking along a pasture, you are already very familiar with common burdock. This biennial w**d is a familiar fixture across roadsides, barnyards and unmanaged pastures and often remembered due to its clinging seed heads and massive rhubarb- like leaves. Common burdock originated in Europe and was likely brought to the United States by early settlers. In the mid-1600’s, it was so widespread across the country it was mistakenly recorded as a native species. Today, it can be found through most of the United States. While it grows in a wide range of soil types, it thrives in nitrogen- rich soils.
As a biennial, common burdock spends its first season as a large basal rosette that stays low to the ground. These first-year leaves are easy to identify: they are massive, heart-shaped, and feature woolly undersides with hollow leaf stalks (petioles). During its second year, the plant bolts—producing a stout, erect, branched stalk that stands 3 to 6 feet tall. Lower leaves on the stem resemble the first-year rosette, but they gradually become smaller and less heart-shaped as they move toward the tip of the stem.
From July until October, second-year common burdock blooms with pinkish-purple, thistle-like flower heads. Each flower sits atop a spherical green head wrapped in hooked bracts. As the seed heads dry, they turn brown and brittle, forming clinging burs armed with sharp, hooked tips designed to hitch a ride on anything passing by. A single plant can produce an average of 15,000 seeds!
Fun Fact: Common burdock inspired the invention of Velcro! In 1941, a Swiss engineer examined the burs stuck to his dog's fur under a microscope, noticed the tiny hooks grabbing onto fabric loops, and designed the famous fastener.
For more information on Common burdock or help identifying it on your property please reach out Guernsey Soil and Water for assistance at 740-489-5276.
Stay tuned for next weeks W**d Watch Wednesday, because every plant has a story- even the pesky ones!