Toxicodendron diversilobum

Toxicodendron diversilobum, commonly known as poison oak, is a plant native to western North America. It produces an oily resin called urushiol, which can cause skin irritation and allergic reactions upon contact. The plant varies in appearance, often with green, lobed leaves that change color in fall. It grows as a shrub or vine and is typically found in forests, grasslands, and chaparral areas. To avoid reactions, it’s best to recognize the plant and wear protective clothing or wash skin thoroughly after potential exposure. Poison oak is a common cause of contact dermatitis in outdoor environments.