Where bold, sunflower-like blooms have plenty of room to grow, these North American native perennials show off. These 3- to 5-foot-tall plants are easy to grow. Their long stalks and 2- to 3-inch-wide blooms in late summer to early autumn make them excellent cut flowers. Cold hardy. Single-flowered types are more drought-tolerant than double-flowered. Prefer full sun and well-drained soil. Use for informal borders or in wild gardens. Plant self-sows. Start by seed and division. Seeds sown outdoors in ordinary dry soil will produce flowers for cutting the second year.
Varieties include the popular H. scabra, a durable plant with fewer orange-yellow blooms than yellow-blooming, shade-tolerant H. helianthoides.