Zaluzianskya capensis

RHS Plant Profile
night phlox

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Synonyms

Zaluzianskya dentata

Annual Biennial
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An annual or short-lived perennial to 40cm tall, with finely toothed, sticky linear leaves. In summer it produces spikes of highly fragrant, red-backed, white flowers to 1.5cm across

Position

Full sun

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0-0.1 metre

Size

Time to Maturity
1 year
Max Spread
0-0.1 metre
Max Height
0.1-0.5 metres

Growing Conditions

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

Position

Full sun
Aspect
South–facing or West–facing
Exposure
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

Fragrance Flower
Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Scrophulariaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Columnar upright
Genus
Zaluzianskya is a genus of compact, semi-evergreen perennials. By day, the flowers remain tightly curled up but by evening, uncurl into scented star-shaped white flowers blooming from mid to late summer.
Name Status
Correct
Plant Range
S Africa

How to Grow

Cultivation

Grow in moist but sharply drained soil in full sun

Propagation

Sow seed in situ in spring

Suggested planting locations and garden types

  • Cottage and informal garden
  • Rock garden
  • Patio and container plants
  • Conservatory and greenhouse
  • Flower borders and beds

Pruning

No pruning required

Pests

Generally pest-free

Diseases

Generally disease-free