You Will Get 5 Seeds Asclepias Physocarpa Syn Gomphocarpus Family Jewels. These cool plants in the Milkweed family get clusters of white flowers that develop into very unique rounded, inflated seed pods.. The plant has many common names, some more PG than others, all relating to the unusual seed pods.. These plants are also a favored host for Monarch Butterflies.. These plants will also grow in full sun to partial shade.. These wonderful plants are also hardy to at least USDA zone 8, and possibly colder.