Rudbeckia maxima
great coneflower
R. maxima is a tall herbaceous perennial producing a mound of large, smooth, blue-grey leaves. The flowering stems rise to 1.5m, carrying yellow-petalled daisy flowers with central dark brown to black cones from midsummer to mid-autumn
Size
Ultimate height
1.5–2.5 metresTime to ultimate height
2–5 yearsUltimate spread
0.5–1 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Blue Grey Silver | |||
|---|---|---|---|---|
| Summer | Brown Yellow | Blue Grey Silver | ||
| Autumn | Brown Yellow | Blue Grey Silver | ||
| Winter |
Position
- Full sun
Aspect
East–facing or South–facing or West–facing
Exposure
Exposed or Sheltered Hardiness
H6Botanical details
- Family
- Asteraceae
- Native to the UK
- No
- Foliage
- Deciduous
- Habit
- Clump forming
- Genus
Rudbeckia may be annuals, biennials or rhizomatous herbaceous perennials, with simple or pinnately divided leaves and large daisy-like flower-heads with yellow or orange rays surrounding a prominent conical disk
- Name status
Correct
- Plant range
- USA
How to grow
Cultivation
Likes a deep, moist soil in a sunny position
Propagation
Propagate by division in spring or autumn
Suggested planting locations and garden types
- Architectural
- Cottage and informal garden
- City and courtyard gardens
- Prairie planting
- Flower borders and beds
Pruning
Deadhead faded flowers
Pests
Generally pest-free
Diseases
Generally disease-free
Get involved
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