Butterfly Weed Asclepias tuberosa Description Blooms large clusters of orange flowers.Bloom period: July into AugustGrowth Habit: MoundedMaximum Height: 24" (60cm)Maximum Spread: 18" (45cm)Growth Rate: Fast More Details Sun Exposure: Full sun Cold Hardiness Zone: 3Attracts butterflies, hummingbirds and beesRabbit and deer resistantDrought and heat tolerantNative to North AmericaLandscape Use: Borders or an accent in a garden