Spiraea × pseudosalicifolia 'Triumphans'

RHS Plant Profile
spiraea 'Triumphans'

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spiraea 'Triumphans' RHS

Synonyms

Spiraea × billardii 'Triumphans'
Spiraea menziesii 'Triumphans'

Shrubs
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A vigorous suckering deciduous shrub forming a thicket of slender stems bearing dark-green, oblong leaves and tiny purplish-pink flowers in conical panicles in mid or late summer

Position

Full sun, Partial shade

Soil Types

Chalk, Loam, Sand

Max Height

1.5-2.5 metres

Max Spread

1.5-2.5 metres

Size

Time to Maturity
5–10 years
Max Spread
1.5-2.5 metres
Max Height
1.5-2.5 metres

Growing Conditions

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

Position

Full sun Partial shade
Aspect
North–facing or 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)
H6

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Rosaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Suckering
Genus
Spiraea are deciduous shrubs, sometimes suckering, with simple leaves and short racemes, panicles or corymbs of small, 5-petalled white or pink flowers in spring or summer
Name Status
Accepted

How to Grow

Cultivation

Easy to grow in most moist soils, tolerant of all but the most extreme conditions. A vigorous shrub that in time can form a dense thicket

Propagation

Propagate by softwood cuttings in summer or by division in autumn or spring

Suggested planting locations and garden types

  • Coastal
  • Cottage and informal garden
  • Flower borders and beds
  • Hedging and screens

Pruning

Pruning group 2. If overgrown, can be renovated by cutting back hard immediately after flowering

Pests

Generally pest-free

Diseases

Generally disease-free but may be susceptible to honey fungus