• 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

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

  • Details 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 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, from softwood nodal stem-tip cuttings from late spring to mid-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 1

Pests Can get aphids, caterpillars and vine weevil

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

Advertise here

Did you find the information you were looking for?

RHS members can get exclusive individual advice from the RHS Gardening Advice team.

Join the RHS now