Coreopsis ‘Star Cluster’

Coreopsis 'Star Cluster' is a herbaceous perennial tickseed in the daisy family, Asteraceae. It forms a mounded clump with fine green foliage and creamy white flowers marked with purple around a golden center.

Coreopsis 'Star Cluster' grows best in full sun, meaning at least 6 hours of direct sunlight daily. In very hot climates, light afternoon shade may help reduce stress, but too much shade can cause weak, floppy growth.

Water Coreopsis 'Star Cluster' regularly while it establishes, then allow the soil to dry somewhat between waterings. Once established, it is drought tolerant, but provide supplemental water during prolonged heat or drought.

Yes, Coreopsis 'Star Cluster' is generally an easy-care perennial when grown in full sun and well-drained soil. Avoid consistently wet conditions, which are more likely to cause problems than moderate dryness.

Coreopsis 'Star Cluster' typically reaches about 18–24 inches tall and 18–24 inches wide. Plants grown in very rich soil may become taller and need support or midsummer shearing.

Coreopsis 'Star Cluster' is commonly listed for USDA Zones 5–9 and is hardy to about -20°F. Winter survival can still vary with drainage, exposure, snow cover, and the severity of local conditions.

Coreopsis 'Star Cluster' tolerates sandy, loamy, or clay soil as long as it drains well. It is not especially fussy about soil pH, but heavy, waterlogged soil should be amended or avoided.

Yes, Coreopsis 'Star Cluster' can grow in clay soil if excess water drains away. Improve compacted clay with organic matter and avoid planting where winter or irrigation water remains around the crown.

Yes, Coreopsis 'Star Cluster' is drought tolerant once established. Water newly planted specimens more consistently, and irrigate mature plants during extended hot, dry periods for better flowering.

Yes, Coreopsis 'Star Cluster' performs well in containers when given full sun and a loose, well-drained potting mix. Containers dry out faster than garden soil, so check moisture more often during summer.

Yes, the flowers of Coreopsis 'Star Cluster' attract butterflies and other flower-visiting insects. Its long flowering season makes it useful in sunny pollinator borders and mixed perennial plantings.

Coreopsis 'Star Cluster' usually needs little fertilizer and often blooms well in average soil. If growth is weak, apply a light balanced fertilizer or compost in spring, but avoid excessive nitrogen because it can promote floppy foliage.

Coreopsis 'Star Cluster' may flop when grown in overly rich soil, heavy shade, or excessive moisture. Shear the plant by about one-quarter to one-half in July, and use a discreet support if necessary.

Deadheading is optional because Coreopsis 'Star Cluster' can continue flowering without it. Removing faded flowers may improve appearance and encourage a tidier, more continuous display.

Keep Coreopsis 'Star Cluster' in full sun, water it during prolonged drought, and remove spent flowers if you want a tidier display. If the plant becomes open or tired after its first flush, midsummer shearing can encourage fresh growth and later blooms.

Coreopsis 'Star Cluster' is generally relatively resistant to serious pest problems, although slugs and snails may damage foliage in damp conditions. Deer and rabbits are commonly considered less likely to browse it than many other perennials.

The purple markings on Coreopsis 'Star Cluster' can become more pronounced during cooler weather, especially in early summer or fall. This color development is a characteristic response of the cultivar rather than necessarily a sign of disease.

Plant Coreopsis 'Star Cluster' in spring or early fall when temperatures are moderate. Spring planting allows roots to establish through the growing season, while fall planting should be done early enough for rooting before the ground freezes.

Space Coreopsis 'Star Cluster' about 18–24 inches apart, depending on the desired density and growing conditions. Allowing adequate airflow helps maintain a neat shape and reduces problems associated with prolonged wet foliage.

Set Coreopsis 'Star Cluster' at the same depth as it was growing in its nursery container, then water thoroughly. Choose a sunny location with well-drained soil and keep the plant evenly moist until new growth shows it is established.

Coreopsis 'Star Cluster' is not a reliable choice for growing true from seed because it is a named hybrid cultivar and may produce little or no viable seed. Division or professionally produced vegetative plants are more dependable for preserving its characteristics.

Propagate Coreopsis 'Star Cluster' by division in early spring or by rooted basal cuttings in spring. Because it is a patented cultivar, commercial propagation may be restricted, so check the plant label and applicable U.S. plant-patent terms.

Divide Coreopsis 'Star Cluster' in early spring as new growth begins, or in early fall where plants have enough time to root before winter. Replant divisions promptly and keep them watered until established.

Cut Coreopsis 'Star Cluster' back after flowering or in late winter to early spring as new growth emerges. In colder areas, leaving some stems standing through winter can provide modest crown protection before the final cleanup.

Coreopsis 'Star Cluster' is considered non-toxic to dogs. Even non-toxic plants can cause mild stomach upset if eaten in large quantities, so contact a veterinarian if your dog shows concerning symptoms.

Coreopsis 'Star Cluster' is considered non-toxic to cats. Prevent excessive plant chewing and seek veterinary advice if a cat develops vomiting, lethargy, or other unusual symptoms after eating any plant.

Coreopsis 'Star Cluster' generally blooms from early or midsummer into fall, often continuing until frost in suitable conditions. Flowering is strongest with full sun, well-drained soil, and adequate moisture during drought.

The flowers are daisy-like with creamy white petals, a golden center, and purple markings near the bases of the petals. The purple coloration may spread or intensify during cooler weather.

Coreopsis 'Star Cluster' may bloom in its first year when planted early and given favorable growing conditions, although flowering is often stronger after the plant becomes established. Nursery-grown plants generally have the best chance of producing early blooms.

Yes, Coreopsis 'Star Cluster' is a herbaceous perennial in suitable climates. It dies back or becomes dormant in winter and returns from the crown in spring, although individual plants may be relatively short-lived.