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Description
Rhododendron Calendulaceum, also known as Flame Azalea, is a deciduous shrub that belongs to the Ericaceae family. It is native to the Appalachian Mountains in the eastern part of North America. This plant is known for its brightly colored flowers that range from orange to red and yellow. It typically blooms in late spring to early summer, and its flowers have a trumpet-like shape. The plant can grow up to 6 to 10 feet tall and wide, and it thrives in acidic soil.
Taxonomic Information
| Domain | Eukaryota |
|---|---|
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Ericales |
| Family | Ericaceae |
| Genus | Rhododendron |
Appearance
The Rhododendron Calendulaceum has a shrub-like appearance with green leaves that turn yellow, orange, or red in the fall. Its flowers are trumpet-shaped and have five petals, and they grow in clusters of 5 to 10. The flowers can be up to 2 inches wide and range in color from orange to red and yellow. The plant has a woody stem and can grow up to 6 to 10 feet tall and wide. It sheds its leaves in the winter and blooms in late spring to early summer.
Care Guide
Rhododendron Calendulaceum requires acidic soil with a pH range of 4.5 to 5.5. It prefers partial shade and moist, well-drained soil. It is recommended to mulch the plant to prevent weeds and retain moisture. Water the plant regularly, especially during dry periods. Fertilize the plant in the spring with an acidic fertilizer. The plant is hardy in USDA zones 5 to 7.
Common Pests & Diseases
The Rhododendron Calendulaceum is susceptible to pests such as spider mites, lace bugs, and azalea caterpillars. These pests can cause damage to the leaves and flowers. The plant is also prone to diseases such as powdery mildew, leaf spot, and root rot. Proper care and maintenance can help prevent these issues.
Habitat
Rhododendron Calendulaceum is native to the Appalachian Mountains in the eastern part of North America. It grows in forests and woodlands with acidic soil. The plant is also commonly found in parks and gardens due to its colorful flowers.
Question and Answer
Q: Can Rhododendron Calendulaceum grow in full sun?
A: The plant prefers partial shade, but it can tolerate some sunlight.
Q: How often should I water a Rhododendron Calendulaceum?
A: Water the plant regularly, especially during dry periods.
Q: Can Rhododendron Calendulaceum grow in alkaline soil?
A: No, the plant requires acidic soil with a pH range of 4.5 to 5.5.
Q: When does Rhododendron Calendulaceum bloom?
A: The plant typically blooms in late spring to early summer.
Related Plants
- Rhododendron austrinum
- Rhododendron canescens
- Rhododendron flammeum
- Rhododendron maximum
References
- “Rhododendron Calendulaceum.” Missouri Botanical Garden. Accessed 29 Aug. 2021.
- “Flame Azalea.” North Carolina State University Extension. Accessed 29 Aug. 2021.
- “Rhododendron Calendulaceum.” Plant Finder. Accessed 29 Aug. 2021.
