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AGM plants have been through a rigorous trial and assessment programme. They are:
This plant will provide nectar and pollen for bees and the many other types of pollinating insects.
It is included in an evolving list of plants carefully researched and chosen by RHS experts. Divided into 3 groups these lists, linked below, are maintained by a team of RHS staff and are reviewed annually.
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Other common names yellow azalea sweet pontica azalea
Synonyms Azalea ponticum Azalea pontica
Family Ericaceae
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
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
Details R. luteum is a bushy deciduous shrub of open growth to 4m tall, with oblong leaves turning orange, purple and red in autumn. Very fragrant bright yellow, funnel-shaped flowers, 5cm in width, are produced in late spring and early summer
Plant range E Europe to Caucasus
Foliage Deciduous
Habit Bushy
Fragrance Flower
Hardiness
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H6
Full Sun
Partial Shade
Aspect West-facing or North-facing or East-facing
Exposure Sheltered
Loam
Sand
MoistureMoist but well-drained
SoilLoam, Sand
pHAcid
Ultimate height 2.5-4 metres
Ultimate spread 2.5-4 metres
Time to ultimate height 10-20 years
Cultivation This plant is listed on Schedule 9 of the UK Wildlife & Countryside Act as an invasive non-native species. While this does not prevent it from being sold in the UK, or from being grown in gardens, the RHS encourages those that do grow it to take great care with managing it and with disposing of unwanted material. The RHS also encourages gardeners to find alternative plants to grow to those listed on Schedule 9. For suggested alternative plants see the Plantlife/RHS guide: Gardening without harmful invasive plants
Propagation Propagate by seed when ripe, or semi-ripe cuttings in late summer, layering in autumn or grafting in late summer or late winter
Suggested planting locations and garden types Hedging & Screens Cottage & Informal Garden Wildlife Gardens
Pruning Pruning group 1
Pests May be attacked by vine weevil, rhododendron leafhopper, pieris lacebug, scale insects, caterpillars and aphids
Diseases May be affected by various Rhododendron diseases including powdery mildews, rhododendron petal blight, rhododendron bud blast, silver leaf and honey fungus
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.