False sunflower (Heliopsis helianthoides) hee-lee-OP-sis hee-lee-an-THOY-deez Genus:  Heliopsis This clump-forming perennial bears striking, sunflower-like yellow blooms on long stalks from midsummer to early autumn. Noteworthy Characteristics:  Long-lasting cut flower. Use in the back of the border or in wildflower or cutting gardens. Care:  Deadhead to prolong bloom. Site in full sun or part shade and moist, well-drained soil. Can be cut back by half in early June to prevent them from flopping. Divide every 2 to 3 years to maintain vigor. Propagation:  Start from seed, divide plants in spring or autumn, or root basal cuttings in spring. Problems:  Prone to powdery mildew and rust.

Overview

Height 3 ft. to 6 ft. Spread 1 ft. to 3 ft. Growth Habit Clumps Light Full Sun to Part Shade Moisture Medium Moisture Characteristics Native, Self Seeds, Showy Flowers Bloom Time Fall, Summer Flower Color Yellow Uses Beds and Borders, Container, Cut Flower, Naturalizing Style Cottage Garden Seasonal Interest Summer Interest Type Perennials