Yakushima rhododendron (Rhododendron yakushimanum)
Care, watering, light and tips for Yakushima rhododendron on Floravia.
Quick facts
- Family: Ericaceae
- Difficulty: Demanding
- Watering: every 7 days
- Light: Partial shade
- Temperature: 10–30 °C
- Toxicity: Toxic to pets
About Yakushima rhododendron
Rhododendron yakushimanum, known as the Yakushima rhododendron, is a compact, slow-growing evergreen shrub native to the Japanese island of Yakushima. It is prized for its dark green, glossy evergreen foliage, often with a felted underside, and its spectacular spring blooms, which range from pure white to pale pink, often with a darker center. It is ideal for rock gardens, border plantings, or as a standalone specimen in small to medium-sized gardens, adding a touch of elegance and lasting color.
Native range
Japan (Yakushima Island)
Care tips
This plant requires a location with partial shade or light shade, avoiding direct midday sun which can scorch its leaves. Watering should be regular, keeping the substrate consistently moist but well-drained, especially during flowering and dry periods; it is crucial to avoid waterlogging. It thrives in acidic soils (pH 4.5-5.5), rich in organic matter, and well-aerated, such as a specific ericaceous compost mix. A common mistake is planting it in alkaline or heavy soils, which can lead to chlorosis and poor development.
How to save a dying Yakushima rhododendron
- Warning signs
- Yellowish or brown, curled, drooping leaves. Soft or black shoots.
- First aid
- Check soil pH (ideal 4.5-5.5), water with lime-free water. Protect from direct sun and wind.
- What kills it
- Alkaline or compacted soil, excessive sun, lack of acidity, waterlogging.
- Can it be saved?
- Yes, if roots are not rotted. Act fast by correcting soil conditions and watering.