Contents
Description
Rhododendron Japonicum is a species of flowering plant that belongs to the family Ericaceae. It is native to Japan and Korea, and is commonly found in mountainous regions. This evergreen shrub can grow up to 6 feet tall, and produces stunning pink or white flowers in the spring.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Ericales |
| Family | Ericaceae |
| Genus | Rhododendron |
Appearance
The leaves of Rhododendron Japonicum are dark green and glossy, and are typically 2-4 inches long. The flowers are trumpet-shaped and can be up to 2 inches across. They are typically pink or white, and have a sweet fragrance.
Care Guide
Rhododendron Japonicum requires well-draining soil that is rich in organic matter. It prefers acidic soil with a pH between 4.5 and 5.5. This plant should be watered regularly, but be careful not to overwater as this can lead to root rot. Fertilize in the spring and fall with a slow-release fertilizer specifically formulated for rhododendrons. This plant prefers partial shade to full sun, but be careful not to expose it to too much direct sunlight. Rhododendron Japonicum is hardy in USDA zones 6-9.
Common Pests & Diseases
Rhododendron Japonicum is susceptible to several pests and diseases, including root rot, leaf spot, and aphids. To prevent these issues, make sure the plant is not overwatered and is planted in well-draining soil. If you notice any signs of disease or pests, treat with an appropriate fungicide or insecticide.
Habitat
Rhododendron Japonicum is native to Japan and Korea, and is commonly found in mountainous regions. It prefers cool, moist environments and is often found growing in the understory of forests.
Question and Answer
Q: Can Rhododendron Japonicum grow in full sun?
A: Rhododendron Japonicum prefers partial shade to full sun, but be careful not to expose it to too much direct sunlight.
Q: What is the hardiness zone for Rhododendron Japonicum?
A: Rhododendron Japonicum is hardy in USDA zones 6-9.
Q: How often should Rhododendron Japonicum be fertilized?
A: Fertilize in the spring and fall with a slow-release fertilizer specifically formulated for rhododendrons.
Q: What is the ideal pH for soil when growing Rhododendron Japonicum?
A: Rhododendron Japonicum prefers acidic soil with a pH between 4.5 and 5.5.
Related Plants
- Rhododendron ‘Nova Zembla’
- Rhododendron ‘PJM’
- Rhododendron ‘Roseum Elegans’
- Rhododendron ‘Cunningham’s White’
References
- Dirr, M. A. (2004). Manual of woody landscape plants: their identification, ornamental characteristics, culture, propagation and uses. Stipes Publishing.
- Flora of Japan. (n.d.). Rhododendron japonicum. Retrieved from http://www.foj.info/index.php?cmd=contents&pid=20080105155132789
- Rhododendron japonicum. (n.d.). Retrieved from https://www.rhs.org.uk/plants/31991/rhododendron-japonicum/details
