About
Rosa 'Sir Cedric Morris' (Ra) is a vigorous rambler rose to about 9 m with thick, glaucous-grey, very thorny stems and abundant, glaucous-purple foliage. Huge clusters of very fragrant, single, pure-white blooms with prominent golden stamens are borne in summer, followed by an abundant crop of orange hips. A spectacular, once-flowering rambler for growing into a large tree or over a robust structure.
About the genus
Rosa, the roses, are deciduous or semi-evergreen shrubs and scrambling climbers with usually thorny stems bearing pinnate leaves and solitary or clustered, five-petalled flowers in a vast range of colours and forms in summer, often followed by showy red, orange or purple hips. Indispensable garden plants for a sunny, well-drained position.
Growing conditions
SunlightFull sun, Partial shade
Soil typeChalk, Clay, Loam, Sand
Soil pHAcid, Alkaline, Neutral
Soil moistureMoist but well-drained, Well-drained
AspectSouth-facing, North-facing, West-facing, East-facing
ExposureExposed, Sheltered
UK hardinessH6
Plant details
Plant typeClimber Wall Shrub, Roses
HabitClimbing
FoliageDeciduous
Height8-12 metres
Spread2.5-4 metres
Time to full height5-10 years
Suggested usesCottage and informal garden
FragranceFlower
ToxicityFruit 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
Care notes
CultivationGrow in fertile, humus-rich, moist but well-drained soil in full sun or part shade. Mulch with well-rotted organic matter in late winter or early spring, and for best flowering apply a general rose or shrub fertiliser in early spring and again in early summer. Suited to north-facing locations, climbing into large trees and poor soil. See rose cultivation
PruningPruning group 18 (rambler roses) - see our video How to prune rambling roses. Don't prune after flowering if fruits (hips) are required
PropagationPropagate by semi-ripe cuttings in late summer or hardwood cuttings in autumn, or by chip budding in summer
Pest resistanceMay 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
Disease resistanceMay be susceptible to rose black spot, rose rust, replant disease, rose dieback, and rose powdery mildew and sometimes honey fungus. May also be susceptible to disorders rose blindness and flower balling