That familiar phrase, "leaves of three, let it be," is a homeowner's warning, often whispered with a shiver. Poison ivy ( Toxicodendron radicans) is a pervasive, irritating plant that can turn a dream ...

The best time to remove poison ivy is during the summer while it’s actively growing and before it produces berries. Avoid composting or burning poison ivy. Burning it can release urushiol into the ...

A flourishing poison ivy plant. Coming into contact with its sap oil will likely cause an itchy rash. iStock/Getty Images Plus. If you're not sure whether the plant in front of you is poison ivy ...

Poison ivy, poison oak, and poison sumac are all known to cause an itchy rash. But they’re not the only plants that can irritate your skin. Get to know wood nettle, stinging nettle, leadwort ...

In addition to poison ivy, there are a few other related plants that can cause the same allergic rash: poison oak and poison sumac. With the plants lurking on forest grounds or wrapped around ...

The rash caused by poison ivy, oak and sumac is the direct result of contact with an oily toxicant within the plant. The plant must be crushed or broken to release these oils.

What is poison ivy? Poison ivy is a common poisonous plant that causes an itchy skin rash when contacted, according to the Cleveland Clinic. Need a break? Play the USA TODAY Daily Crossword Puzzle.

Poison ivy, poison oak, poison sumac and thorny smilax are all plants that we purposefully avoid, for good reason. Properly identifying these species can keep us out of a lot of trouble, as toxins ...

Poison ivy belongs to the Anacardiaceae family, and there are about 30 species that grow in the Americas, but mostly Asia, according to the American Museum of Natural History. Its relatives are ...

Georgia's ecosystem is beautiful, diverse, and sometimes deadly. Here are six plants to avoid if you find them in your yard or in the woods.