Rhododendron yedoense var. poukhanense
Korean azalea
A semi-evergreen shrub, to around 1.2m high, with a spreading habit and narrow, dark green leaves that turn orange and red in autumn. Produces small clusters of two or three lilac pink, lightly fragrant flowers in mid spring
Size
Ultimate height
1–1.5 metresTime to ultimate height
10–20 yearsUltimate spread
1.5–2.5 metresGrowing conditions
Moisture
Moist but well–drainedpH
AcidColour & scent
Stem | Flower | Foliage | Fruit | |
Spring | Pink | Green | ||
---|---|---|---|---|
Summer | Green | |||
Autumn | Green Red Orange | |||
Winter |
Position
- Full shade
- Partial shade
Aspect
East–facing or North–facing or West–facing
Exposure
Sheltered Hardiness
H5Botanical details
- Family
- Ericaceae
- Native to the UK
- No
- Foliage
- Semi 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
- Plant range
- Japan, Korea
How to grow
Cultivation
Grow in moist but well-drained, humus rich, acidic soil, in partial or full shade. Choose a site away from frost pockets and sheltered from strong winds. This species is often deciduous in cooler regions. Mulch annually, ideally with leaf mould; plants are shallow rooting and roots should not be allow to dry out. See rhododendron cultivation for more detailed advice
Propagation
Propagate by semi-hardwood cuttings in late summer
Suggested planting locations and garden types
- City and courtyard gardens
- Cottage and informal garden
- Flower borders and beds
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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