The "Back To School" episode of Harley Quinn Season 5 offers a new, less problematic take on the origins of Poison Ivy.

Poison ivy can be found in every state in the US and in all varying climates. The plant is identifiable as having three ...

Poison ivy contains an oil called urushiol, which causes a red, itchy rash when it transfers to the skin. Every part of the plant contains this oil, from the roots to the stem to the leaves ...

The most common causes of ACD are the plants of the Rhus genus, poison ivy (toxicodendron radican ... or urushiol (found in leaves, stems, and roots), of the plant embeds in the skin, producing ...