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Rosa willmottiae

Willmott's rose

A vigorous, arching, shrub rose, to about 1.5-2m tall, with fern-like, aromatic, grey green foliage. The single flowers are dark purplish-pink with cream stamens and produced in late spring and early summer, followed by elongated, pear-shaped, orange-red hips

Synonyms

Rosa gymnocarpa var. willmottiae

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Ultimate height

1–1.5 metres

Time to ultimate height

2–5 years

Ultimate spread

1–1.5 metres

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

South–facing or East–facing or West–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 ornamental - 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: Correct
Plant range: Tibet to Central China

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

Suggested planting locations and garden types

Cottage and informal garden
Wildlife gardens
Flower borders and beds

Pruning

See pruning group 20 (shrub roses); do not prune after flowering if fruits (hip) are required

Pests

May be susceptible to aphids, including rose aphid, 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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