Jun 25 , 2020
Leaflets three, let it be. Good advice for the majority of people who are allergic to these invasive plants. Some harmless plants are mistaken for poison ivy (young box elder seedlings, for instance), but you’ll know for sure if you develop an itchy rash after coming in contact with the sap, which contains urushiol. Poison ivy (Toxicodendron radicans) and the related poison oak (Toxicodendron diversilobum) spread not only by underground runners but also by seeds dispersed by birds. Treat with an herbicide labeled for poison ivy. Or wear protective clothing and disposable gloves and dig it up by hand, discarding with the trash. See our tips for a weed-free yard.