Rhododendron concinnum Pseudoyanthinum Group
A group of medium to large sized evergreen shrubs, up to 2m high, with scaly young shoots and elliptic, scaly leaves that are dark green above and brown underneath. Clusters of funnel-shaped, deep red or purplish-red flowers are produced at the tips of the stems in April and May
Synonyms
Rhododendron cocinnum 'Pseudroyanthinum'Rhododendron Pseudoyanthinum Group
see moreRhododendron pseudoyanthinum
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Size
Ultimate height
1.5–2.5 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 | Purple Red | Green | ||
|---|---|---|---|---|
| Summer | Green | |||
| Autumn | Green | |||
| Winter | Green |
Position
- Partial shade
Aspect
East–facing or West–facing
Exposure
Sheltered Hardiness
H5Botanical details
- Family
- Ericaceae
- Native to GB / Ireland
- No
- Foliage
- Evergreen
- Habit
- Bushy
- 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
Accepted
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. Mulch annually, ideally with leaf mould. See rhododendron cultivation for more detailed advice
Propagation
Propagate by semi-hardwood cuttings in late summer, by layering in autumn, or by grafting in winter
Suggested planting locations and garden types
- City and courtyard gardens
- Cottage and informal garden
- Flower borders and beds
- Wall side borders
Pruning
Pruning group 8 (evergreens)
Pests
May be susceptible to vine weevil, whitefly, rhododendron leafhopper, lacebugs, scale insects, caterpillars and aphids
Diseases
May be susceptible to rhododendron diseases including rhododendron bud blast and rhododendron petal blight, as well as honey fungus, rust, leafy gall, silver leaf and Phytophthora root and shoot rots. This group of cultivars show some resistance to powdery mildew
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