Impatiens arguta

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Synonyms

Impatiens roingensis

Herbaceous Perennial
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An upright perennial to 30cm with fleshy stems and narrowly oval, pointed, dark green leaves with deep veins. Sprays of pale purple, tubular flowers are produced in summer and autumn

Position

Full shade, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
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
pH
Acid or Alkaline or Neutral

Position

Full shade Partial shade
Aspect
West–facing or North–facing or East–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)
H4

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Balsaminaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Bushy
Genus
Impatiens can be annuals or evergreen perennials, with fleshy stems bearing simple, toothed leaves and solitary or clustered, spurred, 5-petalled flowers
Name Status
Correct
Plant Range
Himalaya, China

How to Grow

Cultivation

Grow in humus-rich, moist but well-drained soil in a sheltered position in full or partial shade. Mulch well in winter

Propagation

Propagate by seed

Suggested planting locations and garden types

  • Cottage and informal garden
  • Sub-tropical
  • Flower borders and beds
  • Underplanting of roses and shrubs

Pruning

No pruning required other than to cut down stems at the end of the season

Pests

Generally pest-free

Diseases

Generally disease-free