This disease can also infect stems, resulting in tip dieback. A leaf spot on an English ivy. Start by removing infected leaves and stems, if possible, to slow the spread of the disease.

Other sayings I’ve run across to help identify poison ivy include “berries white, take flight,” “longer middle stem, don’t touch them,” and “hairy vine, no friend of mine.” ...

Poison ivy Refer to the old adage, “Leaves of three, let it be.” Most poison ivy plants grow on a vine or shrub and can be identified by their three pointed-tip leaves that come off a single stem. One ...

Photo of poison ivy. 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.

Unlike poison ivy and poison oak, its leaves grow on stems with groups of 7 to 13 leaves that appear as pairs. Poison sumac leaves are reddish green.

Poison ivy is a nuisance to most people, but the plant is an important member of the ecosystem. Its leaves, stems and berries are food for animals, and its vines can be shelter for small animals ...

A poison ivy plant appears at Lancaster County Park, in Lancaster, Pa., on July 22, 2010. Botanically known as Toxicodendron radicans, poison ivy contains oily chemical compounds called urushiols ...