Rhododendron yunnanense 'Openwood'
rhododendron 'Openwood'
'Openwood' is a large, robust, semi-evergreen shrub to 4m tall, with narrowly-lanceolate, dark green leaves to 8cm long. Abundant, funnel-shaped flowers, 5cm wide, are pale lavender with red speckling within, borne in late spring
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Size
Ultimate height
2.5–4 metresTime to ultimate height
10–20 yearsUltimate spread
2.5–4 metresGrowing conditions
Moisture
Moist but well–drainedpH
AcidColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Purple | Green | ||
|---|---|---|---|---|
| Summer | Green | |||
| Autumn | Green | |||
| Winter | Green |
Position
- Full sun
- Partial shade
Aspect
North–facing or West–facing or East–facing or South–facing
Exposure
Exposed or Sheltered Hardiness
H4Botanical details
- Family
- Ericaceae
- Native to the UK
- No
- Foliage
- Semi evergreen
- Habit
- Bushy
- Potentially harmful
- Harmful if eaten. Wear gloves and other protective equipment when handling
- 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
Deciduous in cold exposed gardens, grow in moist but well-drained, leafy, humus-rich acid soil in part shade with shelter; see rhododendron cultivation
Propagation
Propagate by semi-ripe cuttings in late summer, layering in autumn or grafting in late summer or late winter
Suggested planting locations and garden types
- City and courtyard gardens
- Cottage and informal garden
- Hedging and screens
Pruning
Pests
May be susceptible to vine weevil, rhododendron leafhopper, pieris lacebug, scale insects, caterpillars and aphids
Diseases
May be susceptible to various Rhododendron diseases including powdery mildews, rhododendron petal blight, rhododendron bud blast, silver leaf and honey fungus
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