In an article earlier this month in Science & The City, Steve “Wildman” Brill talks about the bounties to be had in New York City’s Central Park.
From the article:
“Burdock is one of the tastiest and most healthful root vegetables. It’s an expensive detoxifying herb when you find it in health food stores, but it abounds in cultivated areas throughout Central Park. Remnants of the decaying leaves reveal the taproots’ locations.”