asclepias physocarpa

Asclepias  physocarpa (by flora-file)

This species of milkweed from South Africa is just like most, except that it is giangantor. Most milkweeds are herbaceous perennials, but this one grows into a woody shrub 8 - 10 feet tall. The flowers aren’t that much larger, but it definitely makes up for this lack of size with shear volume.