You Will Get 10 Seeds Lycium Ruthenicum Black Goji Berry Shrub. It is an unusual shrub that gets great green foliage and clusters of purple flowers followed by tasty black berries and these shrubs can grow to 4 to 8 feet tall.. The leaves, roots, and berries are all utilized medicinally.. These unique plants are hardy to USDA zone 4, possibly colder, and they grow best in full sun to part shade.. They would make excellent additions to your rare plant collection, or just make a unique statement in your yard.