Contents
Description
Rhododendron Cinnabarinum, also known as the Scarlet Rhododendron or the Cinnabar Rhododendron, is a beautiful evergreen shrub that belongs to the Ericaceae family. It is native to the Himalayas, specifically in Nepal, Bhutan, and Tibet, where it grows in high altitudes of up to 4,500 meters. This plant is known for its stunning red flowers that bloom in clusters from April to May.
Taxonomic Information
| Domain | Eukarya |
|---|---|
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Angiospermae |
| Order | Ericales |
| Family | Ericaceae |
| Genus | Rhododendron |
Appearance
Rhododendron Cinnabarinum can grow up to 4 meters tall and 3 meters wide. Its leaves are elliptical, glossy, and dark green in color, measuring up to 15 centimeters long and 7 centimeters wide. Its flowers are trumpet-shaped, bright red in color, and measure up to 5 centimeters in diameter. These flowers bloom in clusters of up to 15 flowers and are pleasantly fragrant.
Care Guide
Rhododendron Cinnabarinum requires regular care to thrive. Here are some tips on how to take care of this plant:
Water: This plant needs to be watered regularly to keep the soil moist, especially during the growing season. However, it is important to avoid overwatering as this can lead to root rot.
Fertilization: Rhododendron Cinnabarinum needs to be fertilized regularly with acidic fertilizers to maintain its optimal growth. Apply the fertilizer in early spring before the new growth appears and then again in late summer.
Soil: This plant prefers well-draining acidic soil that is rich in organic matter. It is important to avoid planting it in alkaline soil as this can lead to nutrient deficiencies.
Sunlight: Rhododendron Cinnabarinum prefers partial shade to full sun. It is important to protect it from strong afternoon sunlight as this can scorch the leaves and flowers.
Hardiness Zones: This plant can grow in hardiness zones 6 to 9.
Common Pests & Diseases
Rhododendron Cinnabarinum is susceptible to several pests and diseases, including:
Pests: Spider mites, lace bugs, and aphids can infest this plant and cause damage to the leaves and flowers. Regular monitoring and insecticidal soap sprays can help control these pests.
Diseases: This plant is susceptible to root rot, leaf spot, and powdery mildew. Proper watering and good air circulation can help prevent these diseases.
Habitat
Rhododendron Cinnabarinum is native to the Himalayas, where it grows in high altitudes of up to 4,500 meters. It prefers moist, well-draining soil and partial shade to full sun. This plant is commonly found in forests and mountainous regions.
Question and Answer
Q: Can Rhododendron Cinnabarinum grow in alkaline soil?
A: No, this plant prefers acidic soil and cannot grow in alkaline soil.
Q: How often should I fertilize Rhododendron Cinnabarinum?
A: This plant needs to be fertilized twice a year, in early spring before the new growth appears and in late summer.
Q: Can I grow Rhododendron Cinnabarinum in a container?
A: Yes, this plant can be grown in a container as long as it has well-draining acidic soil and is placed in partial shade to full sun.
Q: How tall can Rhododendron Cinnabarinum grow?
A: This plant can grow up to 4 meters tall and 3 meters wide.
Related Plants
Here are some related plants to Rhododendron Cinnabarinum:
- Rhododendron arboreum
- Rhododendron campanulatum
- Rhododendron ferrugineum
- Rhododendron luteum
References
- “Rhododendron cinnabarinum.” Missouri Botanical Garden. Accessed 16 Sept. 2021. <http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=b682>.
- “Rhododendron cinnabarinum.” Plant Delights Nursery. Accessed 16 Sept. 2021. <https://www.plantdelights.com/products/rhododendron-cinnabarinum>.
- “Rhododendron cinnabarinum.” Royal Horticultural Society. Accessed 16 Sept. 2021. <https://www.rhs.org.uk/plants/4673/rhododendron-cinnabarinum/details>.
