About
Rhododendron purdomii is an evergreen shrub or small tree to 5 m with leathery, bluntly elliptic, green leaves. In late spring it produces clusters of up to 15 bell-shaped, white or pink flowers speckled with purple. A rewarding and ornamental rhododendron for a sheltered, moist, acidic garden.
About the genus
Rhododendron, one of the largest and most diverse shrub genera, includes evergreen and deciduous species and hybrids ranging from dwarf alpines to large trees, all preferring moist, well-drained, acidic soil in sheltered positions with dappled shade or full sun.
Growing conditions
SunlightFull sun, Partial shade
Soil typeClay, Loam, Sand
Soil pHAcid
Soil moistureMoist but well-drained
AspectEast-facing, North-facing, South-facing, West-facing
ExposureSheltered
UK hardinessH5
Plant details
Plant typeShrubs
HabitBushy
FoliageEvergreen
Height4-8 metres
Spread2.5-4 metres
Time to full height10-20 years
Suggested usesCottage and informal garden
ToxicityHarmful if eaten. Wear gloves and other protective equipment when handling. Pets (dogs, cats, rabbits, tortoises) Harmful if eaten - for further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Care notes
CultivationGrow in moist but well-drained, humus rich, acidic soil, in sun or light shade. Choose a site away from frost pockets and sheltered from strong winds. Mulch annually, ideally with leaf mould. See rhododendron cultivation for more detailed advice
PruningMinimal pruning required, see pruning group 8 (evergreens)
PropagationPropagate by seed or by semi-ripe cuttings in late summer
Pest resistanceMay be susceptible to vine weevil, rhododendron and azalea whitefly, rhododendron leafhopper, Pieris lacebug, scale insects, caterpillars and aphids
Disease resistanceMay be susceptible to powdery mildews, honey fungus, silver leaf and Phytophthora, as well as more specific Rhododendron diseases