It may only seem like there's more poison ivy this year. "I would say the number of requests for identification and control information for poison ivy has been consistent over the decade that I have ...

Poison ivy is a fixture of the landscape in eastern North America and parts of Asia. The noxious, rash-causing weed grows in rocky outcroppings, open fields, and at the edge of forests — it generally ...

Poison ivy, poison oak and poison sumac plants are becoming larger and stronger, a trend that's been developing over recent years, according to researchers. That may be a combination of the plant's ...

Over a decade ago, when Peter Barron started removing poison ivy for a living, he decided to document his work. "Every year I always take pictures of the poison ivy as it's blooming," said Barron, who ...

Poison ivy belongs to the same plant family, Anacardiaceae, as mangos and cashews. All three of these plants produce urushiol, the compound that causes the itchy rash. People who chew the mango flesh ...