Rudbeckia Sunbeckia Alicia (Sunbeckia Series)

RHS Plant Profile
black-eyed Susan [Sunbeckia Alicia]

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black-eyed Susan [Sunbeckia Alicia] RHS / Joanna Kossak
black-eyed Susan [Sunbeckia Alicia] RHS
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A short, stocky variety with flowers appearing in the summer. Petals are a golden yellow with a dark brown centre and dark-orange to brown markings on the base of the petals that look like brush strokes. Ideal for pots or containers and also for smaller gardens.

Position

Full sun, Partial shade

Soil Types

Clay, Loam

Max Height

0.1-0.5 metres

Max Spread

0-0.1 metre

Size

Time to Maturity
1–2 years
Max Spread
0-0.1 metre
Max Height
0.1-0.5 metres

Growing Conditions

Clay Loam
Moisture
Moist but well–drained or Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
South–facing or West–facing
Exposure
Exposed or Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H3

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Asteraceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Columnar upright
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
Trade

How to Grow

Cultivation

Best grown as a half-hardy annual. Grows well in moderately fertile, preferably heavy but well-drained soil in full sun or partial shade

Propagation

Propagate by seed sown with gentle heat in spring

Suggested planting locations and garden types

  • Patio and container plants
  • Cottage and informal garden
  • City and courtyard gardens
  • Coastal
  • Wildlife gardens
  • Cut flowers
  • Flower borders and beds
  • Bedding
  • Conservatory and greenhouse

Pruning

Deadhead spent flowers

Pests

Generally pest-free

Diseases

May be susceptible to grey moulds if air circulation is poor