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RosesShrubs

Rosa 'Dupontii' (S)

snowbush rose

A large shrub rose about 2m tall and wide, with grey-green foliage. In midsummer it produces large, fragrant, single, white flowers, sometimes pink tinged, with large golden stamens, in one flush of flowers, followed by a good display of orange-red, oval hips

Other common names

Dupont rose
rose 'Dupontii'

Synonyms

Rosa dupontii
Rosa moschata var. nivea

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Ultimate height

1.5–2.5 metres

Time to ultimate height

5–10 years

Ultimate spread

1.5–2.5 metres

Chalk

Clay

Loam

Sand

Moisture

Moist but well–drained, Well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun

Aspect

West–facing or South–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)

Botanical details

Family: Rosaceae
Native to GB / Ireland: No
Foliage: Deciduous
Habit: Bushy
Potentially harmful: Fruit are ornamental - not to be eaten. Wear gloves and other protective equipment when handling. Pets: Fruit are ornamentl - not to be eaten - see the HTA guide to potentially harmful plants for further information and useful contact numbers
Genus: Rosa can be deciduous or semi-evergreen shrubs or scrambling climbers, with usually thorny stems bearing compound pinnate leaves and solitary or clustered flowers. Flowers may be followed by showy red or purple fruits in some varieties.
Name status: Accepted
Horticultural Group: Shrub roses are large shrubs with usually thorny stems bearing large leaves and fragrant, single to double flowers in clusters in summer, and usually also in autumn

How to grow

Cultivation

Grows best in fertile, humus-rich, moist but well-drained soil in a sunny, open position. Mulch in late winter and, to improve flowering, apply a balanced fertiliser in late winter or early spring - see rose cultivation

Propagation

Propagate by semi-ripe cuttings in late summer or hardwood cuttings in autumn, or by chip budding in summer

Suggested planting locations and garden types

Cottage and informal garden
Wildlife gardens
Hedging and screens
Flower borders and beds

Pruning

See pruning group 20 (shrub roses). Do not prune after flowering if fruit (hips) are required

Pests

May be susceptible to aphids, including rose aphid, which are the most common rose pest. May also be susceptible to rose leafhopper, glasshouse red spider mite, scale insects, caterpillars, large rose sawfly, rose leaf-rolling sawfly and leaf-cutter bees. Deer and rabbits can also cause damage

Diseases

May be susceptible to rose black spot, rose rust, replant disease, rose dieback, and rose powdery mildews. May also be susceptible to disorders rose blindness and flower balling and sometimes honey fungus

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