Solanum retroflexum, commonly known as wonderberry or sunberry, is a historic heirloom fruiting shrub. Both common names are also used for the sometimes poisonous European black nightshade (Solanum nigrum) in some places, particularly where the latter species has been introduced, so care must be taken to distinguish them. It is sometimes called garden huckleberry, but that properly refers to the S. scabrum described by Philip Miller.