Overview
Rudbeckia fulgida var. deamii is a clump forming perennial in the genus Rudbeckia, part of the Asteraceae family, with deciduous foliage. Rudbeckia fulgida var. deamii grows best in full sun, and tolerates well-drained soils and neutral to slightly acidic pH. Its UK hardiness is rated H6. Suggested uses include borders, wildflower gardens and naturalizing. It is native to C USA.
About
Rudbeckia fulgida var. deamii is a perennial coneflower that produces bright yellow, daisy-like flowerheads with dark centres. Native to central USA, it flowers from July to October. It prefers full sun in well-drained, neutral to slightly acidic soil kept at moderate moisture. Suitable uses include borders, wildflower gardens and naturalising.
Wikipedia contributors, CC BY-SA 4.0 — Rudbeckia fulgida
About the genus
Rudbeckia is a plant genus in the Asteraceae or composite family. Rudbeckia flowers feature a prominent, raised central disc in black, brown shades of green, and in-between tones, giving rise to their familiar common names of coneflowers and black-eyed-susans. All are native to North America, and many species are cultivated in gardens for their showy yellow or gold flower heads that bloom in mid to late summer.
Wikipedia contributors, "Rudbeckia", CC BY-SA 4.0 — Rudbeckia
In the garden
Rudbeckia fulgida var. deamii is a perennial member of the Asteraceae from central USA, notable for its session of yellow, daisy-style blooms topped by a dark central disk. Flowering runs from July to October, providing late-summer into autumn presence in the border. Place plants in full sun and a site with well-drained soil of neutral to slightly acidic reaction; the soil should retain moderate moisture without remaining waterlogged. Give an open aspect so individual flowerheads sit above the foliage and provide good air movement around stems to reduce humidity-related issues. Space specimens to allow circulation rather than crowding. In a UK garden Rudbeckia fulgida var. deamii suits mixed herbaceous borders, naturalised meadow areas and wildflower-style plantings; plant in groups for greater impact. Removing spent stems can tidy formal borders, while leaving stems on rougher ground suits naturalising. Expect successive displays of yellow blooms from July to October that extend the season into autumn.
Growing conditions
Best soil and position for Rudbeckia
- Sunlight
- full sun
- Soil type
- well-drained
- Soil pH
- neutral to slightly acidic
- Soil moisture
- medium
- Aspect
- South-facing
- Exposure
- Sheltered
- UK hardiness
- H6
Plant details
Rudbeckia fulgida var. deamii size, habit and characteristics
- Plant type
- perennial
- Habit
- Clump forming
- Foliage
- Deciduous
- Suggested uses
- borders, wildflower gardens, naturalizing
- Native to
- C USA
Care notes
Pruning and caring for Rudbeckia fulgida var. deamii
- Cultivation
- Prefers well-drained soil and full sun; drought tolerant once established
- Pruning
- Deadhead spent flowers to encourage more blooms; cut back in late fall or early spring
- Propagation
- seed, division
- Pest resistance
- Generally pest-free
- Disease resistance
- Generally disease-free
Frequently asked questions
How do I grow Rudbeckia fulgida var. deamii?
Prefers well-drained soil and full sun; drought tolerant once established.
Where is the best place to plant Rudbeckia fulgida var. deamii?
Rudbeckia fulgida var. deamii prefers full sun. It suits sheltered positions.
What soil does Rudbeckia fulgida var. deamii need?
Rudbeckia fulgida var. deamii grows best in well-drained soil. It prefers neutral to slightly acidic soil. Aim for soil that stays medium.
How do I prune Rudbeckia fulgida var. deamii?
Deadhead spent flowers to encourage more blooms; cut back in late fall or early spring.
Is Rudbeckia fulgida var. deamii hardy in the UK?
Rudbeckia fulgida var. deamii has an RHS hardiness rating of H6, meaning it is very hardy, tolerating -20 to -15°C across most of the UK.
How do I propagate Rudbeckia fulgida var. deamii?
Seed, division.
More in the Rudbeckia genus
- Rudbeckia mollisSoft Rudbeckia
- Rudbeckia nitidashining coneflower
- Rudbeckia nitida 'Goldquelle'Black-Eyed Susan
- Rudbeckia nitida 'Herbstsonne'
- Rudbeckia Summerdaisy's Bronze Bicolor
- Rudbeckia sub. 'Henry Eilers'Black-eyed Susan
- Rudbeckia sub. 'Little Henry'Black-eyed Susan