Rudbeckia fulgida var. deamii

Deam's Coneflower

Rudbeckia fulgida var. deamii is a hardy, clump-forming perennial with bright golden-yellow, daisy-like flowers and dark central cones. Blooming from late summer to autumn, it attracts bees and butterflies. Also known as Deam’s Coneflower, it is drought-tolerant and low-maintenance, it thrives in full sun and well-drained soil, adding vibrant, long-lasting colour to gardens.

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Origin: Eastern North America, cultivar of horticultural origin

Genus: Rudbeckia

Species / Cultivar: fulgida var. deamii

Common Name: Deam's Coneflower

Synonym: Rudbeckia deamii

Soil: Moist but Well Drained

Soil that allows water to drain at a moderate rate, without the water pooling.

Growth Rate: Fast

Expect to see prolific growth, especially during growing season.

Water Requirement: Medium

Once it is established, this plant is likely to only require watering during drier periods.

Maintenance: Low

Minimal skill or input needed beyond the basics, a very independent plant.

Situation: Full Sun to Part Shade

Enjoys direct sun most of the day, but tolerant of fewer sunlit hours or light dappling.

Eventual Height: 0.5-1m

The plant's ultimate height in typical growing conditions.

Eventual Spread: 0.1-0.5m

The plant's ultimate spread in typical growing conditions.

Hardiness: Fully Hardy

Will survive unprotected outdoors in most areas of the UK, even in the harshest winters.

Habit: Deciduous

Sheds all its foliage annually, so for a period of the year it will be without foliage.

Lifecycle: Perennial

This plant is persistant and does not die off after flowering. It will return each season indefinitely, if provided with suitable growing conditions.

Care & Size Guidance

Rudbeckia fulgida var. deamii grows to approximately 100 cm tall and 50 cm wide, forming a bushy, upright clump. It thrives in full sun and moist, well-drained soil but is drought-tolerant once established. This hardy perennial produces bright golden-yellow daisy-like flowers with dark central cones from late summer to autumn, attracting pollinators. Deadheading spent blooms encourages prolonged flowering.

Cut back in late autumn or early spring to promote fresh growth. Ideal for borders, wildlife gardens, and prairie-style planting, it pairs well with ornamental grasses and other late-season perennials. Generally disease-resistant, it requires minimal maintenance for long-lasting garden interest.