Coreopsis grandiflora 'Sunburst' (Sunburst tickseed) — perennial

Overview

Coreopsis grandiflora 'Sunburst' is a perennial in the genus Coreopsis, part of the Asteraceae family. Coreopsis grandiflora 'Sunburst' grows best in full sun, and tolerates well-drained soils. Its UK hardiness is rated H7. Suggested uses include borders, containers and cut flowers. It is native to Maine, Missouri, Pennsylvania, South Carolina, Kansas, New Mexico, Oklahoma and Georgia.

About

Coreopsis grandiflora 'Sunburst' is a perennial in the Asteraceae that produces a sustained summer display from June to September. It thrives in full sun on well‑drained soil with a moderate moisture requirement. Fully hardy in the UK (H7), it is grown in borders, containers and for cut flowers. Plants are valued for extending summer colour into early autumn.

Wikipedia contributors, CC BY-SA 4.0 — Coreopsis grandiflora

About the genus

Coreopsis is a genus of flowering plants in the family Asteraceae. Common names include calliopsis and tickseed, a name shared with various other plants.

Wikipedia contributors, "Coreopsis", CC BY-SA 4.0 — Coreopsis

In the garden

Coreopsis grandiflora 'Sunburst' is a herbaceous perennial in the Asteraceae, native to parts of North America including Maine, Missouri, Pennsylvania, South Carolina, Kansas, New Mexico, Oklahoma and Georgia. In the UK it reliably flowers from June to September, providing a steady run of summer blooms that suit repeated cutting. Place 'Sunburst' in a sunny spot with well‑drained soil and moderate moisture; avoid waterlogged ground. Being fully hardy (H7) it tolerates typical UK winters without special protection, so plant at the front or middle of a sunny border or in containers sited on a sunny patio. The plant's growth habit and flowering period make it useful where a dependable summer display is needed. Use it where seasonal cut flowers are required: stems cut in the morning during the main June–September flowering will extend the display and provide vases of summer blooms. Combine with other full‑sun perennials that share well‑drained soil requirements to maintain continuity in the border, and rotate cutting to sustain flowering through the season.

Growing conditions

Best soil and position for Coreopsis

Sunlight: full sun
Soil type: well-drained
Soil moisture: moderate
UK hardiness: H7

Plant details

Coreopsis grandiflora 'Sunburst' size, habit and characteristics

Plant type: perennial
Suggested uses: borders, containers, cut flowers
Native to: Maine, Missouri, Pennsylvania, South Carolina, Kansas, New Mexico, Oklahoma, Georgia

Care notes

Pruning and caring for Coreopsis grandiflora 'Sunburst'

Cultivation: Prefers full sun and well-drained soil. Deadhead to prolong flowering.
Pruning: Deadhead spent flowers to encourage continuous blooming.
Propagation: seed, division