Osteospermum [Antique Blue] (Cape Daisy Series)

RHS Plant Profile
African daisy [Antique Blue]

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Synonyms

Dimorphotheca 'Sakost8076', Osteospermum 'Sakost8076', Osteospermum [Antique Blue] (Cape Daisy Series)

Bedding

A bushy, evergreen perennial, more popularly grown as seasonal annual bedding for patio and balcony summer displays. It has toothed, semi-glossy, lance shaped, mid-green leaves and purple-pink flowers with a darker eye

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
1 year
Max Spread
0.1-0.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

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

Position

Full sun
Aspect
South–facing or West–facing or East–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)
H2

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Asteraceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Bushy
Potentially harmful
Pets (rabbits, rodents): Harmful if eaten. For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Genus
Dimorhotheca can be annuals or woody-based, evergreen perennials with simple, alternate leaves and large daisy-like flower-heads in summer and autumn
Name Status
Synonym

How to Grow

Cultivation

Grow in warm, frost free conditions. Acclimatise plants before planting outside in early summer. Pinching out tips when young will create a well balanced compact plant that is perfect for container cultivation. A useful bedding plant for any well-drained fertile soil in a sunny site. A plant that performs best in sunny and bright, but relatively cool summers

Propagation

Propagate by softwood cuttings in spring of non flowering shoots

Suggested planting locations and garden types

  • City and courtyard gardens
  • Coastal
  • Cottage and informal garden
  • Hanging Basket
  • Patio and container plants
  • Mediterranean climate plants
  • Bedding
  • Conservatory and greenhouse
  • Flower borders and beds
  • Garden edging
  • Wall side borders

Pruning

Pinch out growing tips when young for a well-balanced and well-branched plant. Dead-head thoroughly to prolong the flowering display.

Pests

Generally pest-free but may be susceptible to aphids

Diseases

Generally disease-free but may be susceptible to downy mildews and Verticillium wilt