Heliopsis helianthoides is one of our favorite plants at the end of summer. This perennial native does great in dry soil, clay soil, and rocky soil. The oxeye (or false) sunflower prefers full sun, of course. If you deadhead them, the bloom season will be extended all the way through the end of the summer (and it starts blooming in June!). It gets to be about 3.5’ tall, is a wonderful cut flower for your indoor arrangements, and attracts butterflies. What’s not to love here?