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Description
Rhododendron Occidentale, commonly known as Western Azalea, is a flowering shrub belonging to the Ericaceae family. It is native to the Pacific Northwest region of North America and is known for its fragrant flowers. This plant can grow up to 10 feet tall and 6 feet wide, making it a great choice for large gardens or landscapes.
Taxonomic Information
| Domain | Eukarya |
| Kingdom | Plantae |
| Phylum | Tracheophyta |
| Class | Magnoliopsida |
| Order | Ericales |
| Family | Ericaceae |
| Genus | Rhododendron |
Appearance
Rhododendron Occidentale has green, leathery leaves that are 2-4 inches long and 1-2 inches wide. The flowers bloom in late spring to early summer and are trumpet-shaped, with a diameter of 2-3 inches. They come in shades of pink, white, and yellow and have a sweet fragrance. The bark of the plant is reddish-brown and becomes rough with age.
Care Guide
Rhododendron Occidentale requires moist, well-drained soil that is acidic in nature. It prefers partial shade but can also tolerate full sun. It is recommended to water the plant regularly, especially during hot and dry weather conditions. Fertilize the plant with a balanced fertilizer in early spring and again in late summer. The plant is hardy in USDA zones 6-9.
Common Pests & Diseases
Rhododendron Occidentale is susceptible to various pests and diseases, including lace bugs, spider mites, and powdery mildew. It is important to inspect the plant regularly for any signs of infestation or disease and take appropriate measures to control them. Use insecticidal soap or neem oil for controlling pests and a fungicide for controlling diseases.
Habitat
Rhododendron Occidentale is native to the coastal regions of California, Oregon, and Washington in North America. It grows in moist, shaded areas such as forests, streambanks, and wetlands. It is an important part of the ecosystem and provides food and habitat for various wildlife species.
Question and Answer
Q: What is the best time to prune Rhododendron Occidentale?
A: It is best to prune the plant after it has finished blooming in late spring or early summer.
Q: Can Rhododendron Occidentale be grown in containers?
A: Yes, it can be grown in containers but make sure to use a well-draining acidic soil mix and provide regular watering and fertilization.
Q: How often does Rhododendron Occidentale need to be fertilized?
A: The plant needs to be fertilized twice a year, once in early spring and again in late summer.
Q: What is the ideal pH level for Rhododendron Occidentale?
A: The plant prefers acidic soil with a pH level between 4.5-6.0.
Related Plants
- Rhododendron ‘PJM’
- Rhododendron ‘Nova Zembla’
- Rhododendron ‘Cunningham’s White’
- Rhododendron ‘Polaris’
References
- “Rhododendron Occidentale.” Missouri Botanical Garden. Accessed 20 September 2021. <https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=h170>.
- “Rhododendron Occidentale.” Plant of the Week. United States Department of Agriculture. Accessed 20 September 2021. <https://www.fs.fed.us/wildflowers/plant-of-the-week/rhododendron_occidentale.shtml>.
- “Rhododendron Occidentale.” Royal Horticultural Society. Accessed 20 September 2021. <https://www.rhs.org.uk/Plants/23999/Rhododendron-occidentale/Details>.
