• AGM plants

    AGM plants have been through a rigourous 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

Rhododendron luteum (A)

Yellow azalea

Yellow azalea

© � RHS 1987

  • Other common names Yellow azalea
    Sweet pontica azalea

  • Genus Rhododendron can be evergreen or deciduous shrubs or trees, with simple leaves, sometimes with a dense colourful indumentum of hairs on the lower side, and funnel-shaped, bell-shaped or tubular flowers that may be solitary or in short racemes

  • Family Ericaceae / Ericaceae

  • Species R. luteum is a bushy medium-sized deciduous shrub of open growth, with oblong leaves turning orange, purple and red in autumn. Very fragrant bright yellow, funnel-shaped flowers 5cm in width

  • Plant range E Europe to Caucasus

  • Horticultural Group Azaleas can be deciduous or evergreen, with mostly small, frequently fragrant, funnel-shaped flowers in spring or early summer; deciduous azaleas often have good autumn colour

Characteristics

  • Foliage Deciduous

  • Habit Bushy

  • Fragrance Flower

Colour

Sunlight

  • Full Sun

  • Partial Shade

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

  • Exposure Sheltered

Soil

  • Chalk

    Loam

  • Chalk

    Sand

  • MoistureMoist but well-drained

  • SoilLoam, Sand

  • pHAcid

Size

  • Ultimate height

    2.5-4 metres

  • Ultimate spread

    2.5-4 metres

  • Time to ultimate height

    10-20 years

How to grow

Cultivation Easy to grow in moist, humus-rich acid soil but will not tolerate deep planting. Tolerates partial shade but prefers full sun

Propagation Propagate by seed, semi-hardwood cuttings in late summer, layering in autumn or grafting in late summer or late winter.

Suggested planting locations and garden types Low Maintenance Hedging & Screens Wildlife Gardens

How to care

Pruning Pruning group 8

Pests Can get aphids, caterpillars and vine weevil

Diseases May be affected by powdery mildews, a leaf spot and lime induced chlorosis amongst others

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