Answer: There are a couple of plants commonly called smilax that are twining or vining and produce red berries. One is Asparagus asparagoides, an annual twining plant that produces stalks up to 10' long. It's often used by florists in arrangements. Smilax is also a genus in the lily family that includes sarsaparilla, carrion flower, and catbrier. These plants have prickly stems, some are evergreen, and others are deciduous. The leaf veins run the length of the leaf rather than branching from a central vein. A related genus is Smilacina, or False-Solomon's-Seal. Species in this genus aren't vining, but they have long, arching stems. Some speceis from each group are probably hardy in your area.
Q&A Library Searching Tips