• AGM plants

    AGM plants have been through a rigorous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Rosa rugosa 'Alba' (Ru)

white Japanese rose

white Japanese rose

© � RHS

  • Other common names white Japanese rose
    white wrinkled rose

    Ramanas rose

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  • Genus Rosa can be deciduous or semi-evergreen shrubs or scrambling climbers, with usually thorny stems bearing pinnate leaves and solitary or clustered, 5-petalled flowers followed by showy red or purple fruits

  • Family Rosaceae / Rosaceae

  • Details 'Alba' is a vigorous medium-sized shrub with plentiful glossy, rich green foliage turning yellow in autumn. Fragrant, pure white, single flowers 9cm wide open in summer and autumn, followed by large scarlet hips

  • Horticultural Group Rugosa roses are upright shrubs with very prickly stems bearing handsome, glossy, wrinkled foliage and fragrant, single or semi-double flowers in summer and autumn, often followed by large, tomato-like red hips

Characteristics

  • Foliage Deciduous

  • Habit Bushy

  • Fragrance Flower

Colour

Sunlight

  • Full Sun

  • Partial Shade

  • Aspect South-facing or North-facing or West-facing or East-facing

  • Exposure Exposed or Sheltered

Soil

  • Chalk

    Clay

  • Chalk

    Loam

  • Chalk

    Sand

  • Chalk

    Chalk

  • MoistureWell-drained, Moist but well-drained

  • SoilClay, Loam, Sand, Chalk

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height

    1-1.5 metres

  • Ultimate spread

    1-1.5 metres

  • Time to ultimate height

    2-5 years

How to grow

Cultivation Grow in full sun with fertile, humus-rich, moist but well-drained soil. For best flowering apply a balanced fertiliser and mulch in late winter or early spring. Tolerant of poor soil and shade, suitable for hedging

Propagation Propagate by hardwood cuttings in autumn or by budding in summer

Suggested planting locations and garden types Flower borders and beds Hedging & Screens Coastal Cottage & Informal Garden Wildlife Gardens

How to care

Pruning Pruning group 20 (roses)

Pests aphids, leafhoppers, glasshouse red spider mite, scale insects, caterpillars and rose leaf-rolling sawfly may be a problem. Rabbits and deer can cause damage

Diseases May be affected by black spot, rose rust and powdery mildews

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