Heliopsis helianthoids - Early Sunflowers

Easily grown in average, dry to medium, well-drained soil in full sun. Tolerates drought, but does best if regularly watered. Tolerates a wide range of soils, including poor, dry, and clayey. Tolerates some light shade, but plants are less vigorous and stems need support in heavier shade. Remove spent flowers to extend bloom season. Plant stems may be cut back by 1/3 to 1/2 in late May to reduce overall plant height.