Rhododendron
Rhododendron ponticum
shrubAn evergreen shrub with large, leathery leaves and showy purple-pink flowers in spring. This vigorous, fast-growing species is prized for ornamental value and serves as a rootstock for hybrid rhododendrons. It is highly adaptable to shade and acidic soils.
Common Problems
Select the problem your Rhododendron is experiencing to get a treatment guide.
Care Guide
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Light
Partial shade to dappled sunlight; tolerates full shade but flowers better with some light. Protect from intense afternoon sun, especially in hot climates.
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Water
Keep soil consistently moist but well-draining; water deeply during dry spells. Avoid both waterlogging and drought stress.
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Soil
Acidic, well-draining soil (pH 4.5–6.0) rich in organic matter such as peat or leaf mold. Poor drainage causes root problems.
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Fertiliser
Light feeding after flowering with acid-loving plant fertilizer; excessive fertilizer promotes vegetative growth over blooms.
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Temperature
Prefers cool to temperate conditions; hardy but benefits from shelter in exposed sites. Tolerates frost well once established.
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Humidity
Prefers moderate to high humidity; benefits from misting in dry conditions or drought stress situations.
Toxicity
dangerousToxic to CatsdangerousToxic to DogsdangerousToxic to Children
Contains grayanotoxins in leaves and flowers; toxic if ingested, causing gastrointestinal upset and cardiac issues. All parts are poisonous.
Common Diseases
Common Pests
Seasonal Care
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Resume regular watering and feeding as growth picks up.
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Peak growing season. Water and feed regularly.
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Reduce watering as growth slows. Stop heavy feeding.
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Minimal watering and feeding. Protect from frost if needed.