Rhododendron primuliflorum
An evergreen shrub with a twiggy, branching habit, usually up to about 1.2m high, though this species can reach 2.5m. Leaves are small, aromatic and glossy dark green, with overlapping yellow-brown scales on the undersides. Flowers are small and tubular, opening to funnel-shaped at the ends, and usually white with a yellow tube, or occasionally rose pink. Flowers are produced in mid to late spring
Size
Ultimate height
1–1.5 metresTime to ultimate height
5–10 yearsUltimate spread
1–1.5 metresGrowing conditions
Moisture
Moist but well–drainedpH
AcidColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | White Yellow Pink | Green | ||
|---|---|---|---|---|
| Summer | Green | |||
| Autumn | Green | |||
| Winter | Green |
Position
- Partial shade
Aspect
North–facing or West–facing
Exposure
Sheltered Hardiness
H5Botanical details
- Family
- Ericaceae
- Native to GB / Ireland
- No
- Foliage
- Evergreen
- Habit
- Spreading branched
- Potentially harmful
- Harmful 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
- 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
- Name status
Correct
How to grow
Cultivation
Grow in moist but well-drained, humus rich, acidic soil, in partial or dappled shade. Choose a site away from frost pockets and sheltered from strong winds, and do not allow plants to dry out. Mulch annually, ideally with leaf mould. See rhododendron cultivation for more detailed advice
Propagation
Propagate by semi-ripe cuttings in late summer
Suggested planting locations and garden types
- City and courtyard gardens
- Cottage and informal garden
- Patio and container plants
- Flower borders and beds
- Wall side borders
Pruning
Minimal pruning required, see pruning group 8 (evergreens)
Pests
May be susceptible to vine weevil, rhododendron and azalea whitefly, rhododendron leafhopper, Pieris lacebug, scale insects, caterpillars and aphids
Diseases
May be susceptible to powdery mildews, honey fungus, silver leaf and Phytophthora, as well as more specific Rhododendron diseases
Get involved
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