AdvertisementForaging The Weeds For Wild, Healthy GreensApril 18, 2011Nancy ShutefacebookEmailSam Thayer, an urban forager who has written field guides to edible plants, munches on Siberian elm seeds called samaras he found in Washington, D.C. Thayer says the seeds taste like a cross between sweetened oatmeal and lettuce. (Maggie Starbard)