concave-leaf rhododendron
Also known as: Davidson rhododendron
R. davidsonianum is a large upright evergreen shrub to 4m tall, with glossy, dark, lanceolate leaves and, in mid to late spring trusses of funnel-shaped, clear pink to purplish-pink flowers to 4cm in width
Scientific classification
- Species
- concave-leaf rhododendron (Rhododendron davidsonianum)
- Genus
- Rhododendron
- Family
- Ericaceae
- Harmful if eaten. Wear gloves and other protective equipment when handling
- Toxicity
- Shrubs
- Plant type
- 2.5-4 metres
- Height
- 1.5-2.5 metres
- Spread
- Evergreen
- Foliage
- Bushy
- Habit
- Spring · Summer · Autumn · Winter
- Season of interest
- Full sun · Partial shade
- Sunlight
- Information to be completed
- Ideal temperature
concave-leaf rhododendron pictures
Distribution of concave-leaf rhododendron
Distribution map
China (Sichuan)
Information to be completed
Culture
Information to be completed
Toxicity
Harmful if eaten. Wear gloves and other protective equipment when handling
Quick identification of concave-leaf rhododendron
Information to be completed
concave-leaf rhododendron care guide
- Soft acidic water for irrigation, soil lightly damp with zero standing excess water
- Watering
- Full sun · Partial shade
- Sunlight
- Information to be completed
- Ideal temperature
Watering
Soft acidic water for irrigation, soil lightly damp with zero standing excess water
Fertilizing
FertilizingSpecialized rhododendron acid feed monthly spring extending to late summer months
Pruning
PruningUsually little pruning is needed. Lightly shape if necessary, removing dead, damaged or diseased shoots. Prune after flowering.
Propagation
PropagationPropagate by seed when ripe, or semi-ripe cuttings in late summer, layering in autumn or grafting in late summer or late winter
Growing
GrowingGrow in moist but well-drained, leafy, humus-rich acid soil in part shade or in a sunny position if soil remains moist, with shelter; see rhododendron cultivation
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Common pests and diseases
Diseases
May be susceptible to various Rhododendron diseases including powdery mildews, rhododendron petal blight, rhododendron bud blast, silver leaf and honey fungus
Pests
May be susceptible to vine weevil, rhododendron and azalea whitefly, rhododendron leafhopper, pieris lacebug, scale insects, caterpillars and aphids
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