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Description
Rhododendron Yunnanense, commonly known as Yunnan Rhododendron, is an evergreen shrub or small tree that is native to China’s Yunnan province. This rhododendron species is highly prized for its showy, fragrant flowers that bloom in the spring or early summer.
Taxonomic Information
| Domain: | Eukarya |
| Kingdom: | Plantae |
| Phylum: | Spermatophyta |
| Class: | Magnoliopsida |
| Order: | Ericales |
| Family: | Ericaceae |
| Genus: | Rhododendron |
Appearance
The Yunnan Rhododendron has dark green, glossy foliage that is evergreen. The leaves are oval or elliptic in shape and can grow up to 15 centimeters in length. The flowers are trumpet-shaped and can be white or pale pink. They have a yellow-green blotch in the center and a pleasant fragrance. The flowers usually bloom in clusters of 3 to 7 and can grow up to 5 centimeters in diameter.
Care Guide
When caring for Rhododendron Yunnanense, it is important to keep in mind the following:
- Water: This plant needs to be watered regularly, especially during the summer months. Make sure the soil is moist but not waterlogged.
- Fertilization: Feed the plant with a slow-release fertilizer in early spring and again in early summer.
- Soil: The Yunnan Rhododendron prefers well-draining, acidic soil that is rich in organic matter. A pH between 4.5 and 5.5 is ideal.
- Sunlight: This plant prefers partial shade to full shade. Direct sunlight can scorch the leaves and flowers.
- Hardiness Zones: This plant is hardy to USDA zones 7 to 9.
Common Pests & Diseases
The Yunnan Rhododendron is susceptible to the following pests and diseases:
- Aphids: These small, soft-bodied insects feed on the sap of the plant and can cause stunted growth and distorted leaves.
- Spider Mites: These tiny mites can cause yellowing of the leaves and webbing on the plant.
- Phytophthora Root Rot: This fungal disease can cause the plant to wilt and die. It is caused by poorly-draining soil and overwatering.
- Bud Blast: This disease causes the flower buds to turn brown and drop off the plant. It is caused by high humidity and poor air circulation.
Habitat
The Yunnan Rhododendron is native to China’s Yunnan province, where it grows in forests and on mountain slopes. It prefers well-draining, acidic soil and partial to full shade.
Question and Answer
Q: Can Rhododendron Yunnanense be grown in containers?
A: Yes, this plant can be grown in containers as long as the container is large enough to accommodate the plant’s root system. Make sure the soil is well-draining and acidic.
Q: How often should I fertilize my Yunnan Rhododendron?
A: Feed the plant with a slow-release fertilizer in early spring and again in early summer.
Q: Can I propagate Rhododendron Yunnanense?
A: Yes, this plant can be propagated through stem cuttings or layering.
Q: What is the best time to prune this plant?
A: Prune the plant after it has finished flowering in the spring or early summer. This will encourage bushier growth and more flowers the following year.
Related Plants
- Rhododendron ‘Ginny Gee’
- Rhododendron ‘Nova Zembla’
- Rhododendron ‘PJM’
References
- Dirr, M. A. (2004). Manual of woody landscape plants: Their identification, ornamental characteristics, culture, propagation and uses. Champaign, IL: Stipes Pub. Llc.
- Greer, H. E. (1996). Greer’s guidebook to available rhododendrons. Eugene, OR: Timber Press.
- Rhododendron yunnanense. (n.d.). Retrieved from http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200015369
