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

Poison sumac is more similar to poison ivy and poison oak than it is to other ... Staghorn sumac has bright orange or red berries growing at the edge of its stems. Its leaves also have saw-toothed ...

With springtime in full bloom, both beautiful flowers and unwanted weeds are sprouting up all around ... common plants to avoid, like poison hemlock, poison ivy and poison oak.

Poison Ivy thrives in a climate changed world ... As warmer temperatures drive longer growing seasons across the U.S., and rising carbon dioxide levels increase pollen concentrations, conditions ...