Another plant you really want to avoid touching is the wild parsnip. These look related to the aforementioned giant hogweed, ...

Poison ivy (Toxicodendron radicans) is a vine that contains an oily resin known as urushiol. According to the Centers for ...

The plant may have yellow or green flowers or yellow-green berries, depending on the time of year. Like poison ivy and poison sumac, poison oak releases an oil called urushiol when it sustains damage.

When you’re spending time outdoors this summer, in your own yard or hiking in a park, it’s useful to know to spot poison ivy.

More carbon dioxide in the atmosphere also means more pollen and stronger pollen for common airborne allergens like ragweed. Poison Ivy thrives in a climate changed world. Plants grow faster ...