Hedera helix, the common ivy, is a species of flowering plant of the ivy genus in the family Araliaceae, native to most of Europe and western Asia. A rampant, clinging evergreen vine, it is a familiar sight in gardens, waste spaces, and wild areas, where it grows on walls, fences, tree trunks, etc. across its native and introduced habitats. As a result of its hardy nature, and its tendency to grow readily without human assistance, English ivy attained popularity as an ornamental plant, but escaped plants have become naturalised outside its native range and grow unchecked in myriad wild and cultivated areas.
Invasive in California and the northwestern United States.