Cosmos Sonata Pink is a compact, branching annual wildflower native to Mexico. Other common names of this plant are Mexican Aster or Cut Leaf Cosmos. Sonata Pink Cosmos features attractive, finely cut foliage that is topped with large, light-pink flowers. It begins to bloom in summer and blooms nonstop until first frost, providing a charming display of pink color while attracting butterflies and bees to the garden. Self-sows.