Seeds of asclepias curassavica Monarch?s Promise. An annual milkweed with variegated, pink-tinted leaves and red and orange flowers. Growing up to 24-30 inches tall and 18 inches across. I grow these in large pots and have overwintered them for two years. Another plus is that the seeds pods are also variegated with multi-colored stripes. This plant is a larva food plant and host for the monarch butterfly. Grows in full sun and light shade. ZOnes 9 and above.