What is the plant
Native to the Americas, this is a large group of tough, moderately fast-growing, evergreen to deciduous vines that grow from rhizomes or large tubers. Some species are valuable ornamentals, others flat-out weeds; some are viciously thorny, others nearly thornless. All climb by tendrils. Greenish or yellowish flowers in spring or early summer are small and insignificant, but the berries that follow are often showy and are relished by birds. Because many species look similar, this is a difficult group to sort out; the common names can be as tangled as the vines.
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