Impatiens New Guinea Group

RHS Plant Profile
New Guinea hybrids

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Bedding Conservatory Greenhouse Houseplants

New Guinea Group Impatiens are hybrids of Impatiens plants with a great variety of flower and leaf colours and are sold in nurseries and garden centres for summer bedding and patio plants. The species 'hawkeri' has often been crossed with Impatiens aurantiaca and Impatiens platypetala to improve characteristics such as drought resistance and floriferousness and to increase the colour range and improve the habit and compactness of plants.

Position

Full sun, 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
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
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
East–facing or North–facing or 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)
H1B

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Balsaminaceae
Native to GB/Ireland
No
Foliage
Evergreen
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
Accepted

How to Grow

Cultivation

Grow on in warm frost free conditions. Acclimatise plants before planting outside in early summer. Pinching out when young will create a well balanced compact plant that is perfect for container cultivation. A useful bedding plant for any well drained soil in partial shade or sun.

Propagation

Propagate by seed or softwood cuttings

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Hanging Basket
  • Houseplants
  • Patio and container plants
  • Sub-tropical
  • Bedding
  • Conservatory and greenhouse
  • Flower borders and beds

Pruning

Pinch out growing tip when young for a well-balanced and well-branched plant. Careful and regular dead-heading can prolong the flowering display well into autumn.

Pests

Generally pest-free. May be susceptible to aphids, glasshouse red spider mite and vine weevil

Diseases

Generally disease-free