Seeds from this hard to find Sarcostemma viminale Climbing white Milkweed vine or Rapunzel plant. Native to Africa, commonly twining through shrubs, fences and other supports. Succulent vine. Stems and branches mostly prostrate or scrambling over other vegetation, grey green, producing milky sap when broken. Flowers in spherical umbels, sweetly scented. Sun loving vine for butterflies is hardy in zones 9b to 11.