Overview
Rudbeckia maxima is a upright perennial in the genus Rudbeckia, part of the Asteraceae family, with green foliage. Rudbeckia maxima grows best in full sun, and tolerates loam soils and neutral pH. Its UK hardiness is rated H7. Suggested uses include borders, containers and prairie-style plantings. It is native to Arkansas, Louisiana, Oklahoma, South Carolina and Texas.
About
Rudbeckia maxima, the great coneflower, is a flowering plant in the family Asteraceae, which is used as an ornamental plant. They can reach a maximum height of eight feet.
Wikipedia contributors, CC BY-SA 4.0 — Rudbeckia maxima
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
- Loam
- Soil pH
- Neutral
- Soil moisture
- Moist
- Aspect
- South-facing
- Exposure
- Sheltered
- UK hardiness
- H7
Plant details
Rudbeckia maxima size, habit and characteristics
- Plant type
- perennial
- Habit
- Upright
- Foliage
- Green
- Suggested uses
- Borders, containers, prairie-style plantings
- Native to
- Arkansas, Louisiana, Oklahoma, South Carolina, Texas
Care notes
Pruning and caring for Rudbeckia maxima
- Propagation
- Division, seed
- Pest resistance
- Moderate
- Disease resistance
- Moderate
Frequently asked questions
Where is the best place to plant Rudbeckia maxima?
Rudbeckia maxima prefers full sun. It suits sheltered positions.
What soil does Rudbeckia maxima need?
Rudbeckia maxima grows best in loam soil. It prefers neutral soil. Aim for soil that stays moist.
Is Rudbeckia maxima hardy in the UK?
Rudbeckia maxima has an RHS hardiness rating of H7, meaning it is fully hardy throughout the UK, tolerating temperatures below -20°C.
How do I propagate Rudbeckia maxima?
Division, seed.
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