Oxypetalum coeruleum, commonly known as Blue Flowered Milkweed, is an evergreen perennial vine or subshrub native to the grasslands and open woodlands of Southern Brazil and Uruguay. It typically grows to 100 cm (39 in) in length and features heart-shaped, gray-green, downy leaves. The plant is celebrated for its clear pale blue, star-shaped flowers that bloom in the summer, are long-lasting, and suitable for cutting. As the flowers age, they transition to a purple hue and are succeeded by distinctive 30 cm (12 in) long, boat-shaped seed pods. The seeds are equipped with downy parachute-like tufts (cypsela), aiding in their dispersal.

Blue Flowered Milkweed is valued for its striking blue flowers, which add a unique color to the garden palette. It is often used in borders, as a specimen plant, or in butterfly gardens due to its attractiveness to pollinators. This plant thrives in full sun and requires well-drained soil that is on the drier side. It is drought-tolerant once established, making it a low-maintenance option for gardeners. While propagation is typically done via seed, gardeners should note that it has a minimum temperature range of 3–5 °C (37–41 °F) and should be protected from frost or grown as an annual in colder regions.CC BY-SA 4.0