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Rhododendron luteum (A)

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© RHS 1987

Characteristics

Plant type

Shrub

Habit

Bushy

Fragrance

Flower

Resilience

Hardiness

H5 (hardy - cold winter)

Colour

Flower

Yellow in Spring

Foliage

Green in Spring and Summer
Orange, Purple and Red in Autumn

Size

Ultimate height

2.5-4 metres

Ultimate spread

2.5-4 metres

Time to ultimate height

10-20 years


Preferred common name

yellow azalea

Family

Ericaceae


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

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

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

Other common names

  • sweet pontica azalea

How to grow

Sunlight

  • Full sun
  • Part shade

Aspect

  • North-facing, East-facing, South-facing or West-facing
  • Sheltered

Cultivation

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

Soil

  • Moist but well-drained
  • Acid
  • Loam or Sand

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, Wildlife Gardens or Hedging/Screens


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