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Impatiens New Guinea Group

New Guinea hybrids

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.

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Ultimate height

0.1–0.5 metres

Time to ultimate height

1 year

Ultimate spread

0.1–0.5 metres

Chalk

Clay

Loam

Sand

Moisture

Moist but well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

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

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

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