Overview
Rudbeckia triloba 'Blackjack Gold' is a clump-forming perennial in the genus Rudbeckia, part of the Asteraceae family, with deciduous foliage. Rudbeckia triloba 'Blackjack Gold' grows best in full sun, and tolerates well-drained soils and neutral and slightly acidic pH. Its UK hardiness is rated H5. Suggested uses include borders, wildflower gardens and pollinator gardens. It is native to Colorado, Missouri, South Carolina, District of Columbia, Alabama, Louisiana, Maryland and Ohio.
About
Rudbeckia triloba, the browneyed or brown-eyed susan, thin-leaved coneflower or three-leaved coneflower, is a species of flowering plant in the family Asteraceae with numerous, yellow, daisy-like flowers. It is native to the central and eastern United States and is often seen in old fields or along roads.
Wikipedia contributors, CC BY-SA 4.0 — Rudbeckia triloba
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
Growing conditions
Best soil and position for Rudbeckia
- Sunlight
- full sun
- Soil type
- well-drained
- Soil pH
- neutral, slightly acidic
- Soil moisture
- moderate
- Aspect
- South-facing
- Exposure
- Exposed
- UK hardiness
- H5
Plant details
Rudbeckia triloba 'Blackjack Gold' size, habit and characteristics
- Plant type
- perennial
- Habit
- Clump-forming
- Foliage
- Deciduous
- Suggested uses
- borders, wildflower gardens, pollinator gardens
- Native to
- Colorado, Missouri, South Carolina, District of Columbia, Alabama, Louisiana, Maryland, Ohio
Care notes
Pruning and caring for Rudbeckia triloba 'Blackjack Gold'
- Cultivation
- Prefers well-drained soil and full sun; deadhead to prolong flowering
- Pruning
- Cut back after flowering to encourage bushier growth
- Propagation
- seed, division
- Pest resistance
- Generally pest-free
- Disease resistance
- Generally disease-free
Frequently asked questions
How do I grow Rudbeckia triloba 'Blackjack Gold'?
Prefers well-drained soil and full sun; deadhead to prolong flowering.
Where is the best place to plant Rudbeckia triloba 'Blackjack Gold'?
Rudbeckia triloba 'Blackjack Gold' prefers full sun. It suits exposed positions.
What soil does Rudbeckia triloba 'Blackjack Gold' need?
Rudbeckia triloba 'Blackjack Gold' grows best in well-drained soil. It prefers neutral and slightly acidic soil. Aim for soil that stays moderate.
How do I prune Rudbeckia triloba 'Blackjack Gold'?
Cut back after flowering to encourage bushier growth.
Is Rudbeckia triloba 'Blackjack Gold' hardy in the UK?
Rudbeckia triloba 'Blackjack Gold' has an RHS hardiness rating of H5, meaning it is hardy in most of the UK, tolerating -15 to -10°C.
How do I propagate Rudbeckia triloba 'Blackjack Gold'?
Seed, division.
From the Fenn Plants journal
- Notes on DaffodilsWhen to plant daffodil bulbs in the UK, how deep, how to naturalise them in grass, why daffodils stop flowering (“blindness”), and why you should never mix cut daffodils with other flowers.
- Keeping Your NerveHow to garden through a heatwave — the best time to water, why deep soaks beat daily sprinkles, caring for pots and vulnerable plants, and why you can let the lawn go brown.
- Made to LastHow to clean, store and protect garden pots and planters — the frost-proof vs frost-resistant difference, winter care for terracotta and ceramic, and how to reuse a broken pot.
More in the Rudbeckia genus
- Rudbeckia fulgidablack-eyed Susan
- Rudbeckia fulgida 'Goldsturm'Black-eyed Susan
- Rudbeckia fulgida var. deamiiDeam's coneflower
- Rudbeckia fulgida var. sullivantiiSullivant's coneflower
- Rudbeckia laciniatacut-leaved coneflower
- Rudbeckia laciniata 'Golden Glow'Golden Glow
- Rudbeckia mollisSoft Rudbeckia
- Rudbeckia nitidashining coneflower
