Bring bright, summer-long color to your beds and borders with Heliopsis helianthoides 'Rays For Days' (False Sunflower 'Rays For Days'). This compact selection produces round, fully double, golden-yellow flowers on sturdy stems, giving you a cheerful, zinnia-like look that works beautifully in mixed borders and in fresh-cut arrangements.
Plant it where it will receive full sun to part shade. In stronger sun, you'll get the fullest flowering and the most compact growth; in part shade, it will still perform well, especially where afternoons are hot. Give it average, well-drained soil, and water regularly while it establishes a strong root system; once settled in, it can handle short dry spells better than many summer bloomers.
At a mature size of about 24-26 inches tall with an 18-20 inch spread, 'Rays For Days' fits neatly at the front to middle of perennial plantings. It pairs easily with ornamental grasses, salvias, coneflowers, and other pollinator-friendly perennials, and it looks especially good in small drifts where the double blooms can read as one bright splash of yellow.
For easy care, remove spent blooms if you want a tidier look, though it will keep flowering even if you do not deadhead. Cut stems back in late fall or leave them standing into winter for seasonal interest, then trim in early spring before new growth begins. Divide clumps every few years if needed to refresh vigor and keep the planting looking its best.