Alpenrose (Rhododendron ferrugineum)
Care, watering, light and tips for Alpenrose on Floravia.
Quick facts
- Family: Ericaceae
- Difficulty: Demanding
- Watering: every 7 days
- Light: Partial shade
- Temperature: 10–30 °C
- Toxicity: Toxic to pets
About Alpenrose
Rhododendron ferrugineum, also known as Alpenrose or Rusty-leaved Rhododendron, is a small to medium-sized evergreen shrub, characterized by its glossy, leathery leaves with a reddish-brown underside due to a layer of scales. Its vibrant pink or purple flowers, appearing in clusters, make it ideal for rock gardens, shrub borders, or as an ornamental potted plant in colder climates. It is a native species of the mountainous regions of Europe, adapted to alpine conditions.
Native range
Mountains of Central and Southern Europe (Alps, Pyrenees, Carpathians)
Care tips
It prefers indirect light or partial shade, thriving in acidic, well-drained soils rich in organic matter. Keep the substrate consistently moist, but not waterlogged, especially during dry periods and flowering. A common mistake is planting it in alkaline or calcareous soils, which can lead to chlorosis and poor growth; ensure the soil pH is acidic. Protect young plants from late frosts.
How to save a dying Alpenrose
- Warning signs
- Yellowing and dropping leaves, stunted growth, brown leaf tips. Indicate stress from incorrect pH or lack of humidity.
- First aid
- Check soil pH (must be acidic, 4.5-5.5). If alkaline, use acidifying fertilizer or repot into ericaceous soil. Ensure constant moisture, but avoid waterlogging.
- What kills it
- Alkaline soil is its death sentence. Also extreme over or under-watering, and intense direct sun.
- Can it be saved?
- Yes, if you act quickly to correct soil pH and watering. It's hardy, but needs very specific conditions.