Seeds from Calotropis gigantea Blue, also known as Giant Milkweed, Crown Flower, Giant Calotrope, and Swallow wort. This shrub loves to live in full sun where it can bloom all year round. It can get about 8 feet tall and produces the most beautiful blue and purple blossoms which bring on the bees, butterflies, wasps, and birds. This plant is known to attract a great diverse multitude of wildlife. The middle section of the flower is used to make candy, and the leaves are use to brew an alcohol. This plant produces a fiber that is so strong that it is used to make ropes. USDA Hardiness Zones 10 to 11.