Zinnia haageana 'Aztec Orange' (d)

RHS Plant Profile
zinnia 'Aztec Orange'

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zinnia 'Aztec Orange' RHS / Joanna Kossak
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Annual Biennial

A compact annual to around 40cm tall with hairy, lance-shaped leaves and from summer into autumn, double orange-yellow flowers borne on well-branched stems

Position

Full sun

Soil Types

Chalk, Clay, 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 Clay 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
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
Deciduous
Habit
Bushy
Genus
Zinnia can be annuals, perennials or sub-shrubs, with branching stems bearing opposite leaves and solitary terminal flower-heads in summer
Name Status
Unresolved

How to Grow

Cultivation

Grow in a fertile, well drained soil in full sun

Propagation

Propagate by seed; resents root disturbance so either sow in situ in late spring after the danger of frost has passed or take care when transplanting from seed sown under cover with heat in early spring

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Patio and container plants
  • Low Maintenance
  • Cut flowers
  • Flower borders and beds

Pruning

Deadhead to prolong flowering. Pinch back stems of young plants to encourage branching unless long-stemmed flowers are required

Pests

Generally pest-free

Diseases

May be susceptible to foot and root rot, grey moulds, fungal leaf spot and powdery mildews