The Butterfly Plant A. Incarnata, 'Asclepias', have rosy pink flowers. It is a beacon for butterflies and a low care perennial. Excellent for borders, as tall ground cover or for cut flowers. This Pink Butterfly plant is one of the most attractive plants for butterfly gardens; beautiful clusters of pink flowers begin blooming in early summer and last well into fall. It prefers to be planted in full sun. Use in mass plantings, as a border plant, or as a tall ground cover. Excellent for use in dried flower arrangements.