Introduction
Cymbidium orchids are a diverse genus with a range of growth habits, making it difficult to categorize them as exclusively epiphytic or terrestrial. While some Cymbidium species are epiphytic, growing on trees and rocks, others are lithophytic, growing on rocks and boulders, and some are terrestrial, growing in the ground. Understanding the different growth habits of Cymbidium orchids is essential for providing the right growing conditions.
Key Points
Epiphytic and Lithophytic Species
Some Cymbidium species, like Cymbidium madidum, grow as perched epiphytes on tree trunks and branches, and as lithophytes on rocks, boulders, and cliff faces. These orchids thrive in well-aerated, humid environments, often found in tropical and subtropical forests.
Terrestrial Species
Other Cymbidium species, like Cymbidium canaliculatum, grow in the ground, often in sandy or gravelly soil. These terrestrial orchids can also be found in open forest, woodland, and tropical savannah habitats.
Variation in Growth Habit
The Cymbidium genus includes both epiphytic and terrestrial species, and even some species can exhibit both growth habits depending on the environment. This diversity makes it challenging to categorize all Cymbidium orchids as solely epiphytes.
Planting and Care
Lighting
Cymbidiums prefer bright, indirect light, similar to their natural habitats. They can thrive near east-facing windows or in slightly shaded south-facing windows.
Temperature
Cymbidiums require a temperature difference between day (around 75°F) and night (50-60°F) to bloom well. Miniature Cymbidiums can tolerate slightly warmer temperatures.
Humidity
Moderate humidity (around 50%) is ideal for Cymbidiums, especially during budding and flowering. Good air circulation is necessary to prevent over-humidification.
Watering
Consistent moisture is preferred, but the potting mix should not be waterlogged. Reduce watering during the winter months.
Troubleshooting
Sunburn
Cymbidiums can sunburn if exposed to direct sunlight. Provide partial shade to prevent this.
Over-Humidification
Ensure good air circulation to prevent over-humidification, which can lead to root rot and other problems.
References
- Australian National Botanic Gardens. (n.d.). Cymbidium. Retrieved from https://www.anbg.gov.au/cpbr/cd-keys/RFKOrchids/key/rfkorchids/Media/Html/genera/Cymbidium.htm
- Wikipedia. (2022). Cymbidium. Retrieved from https://en.wikipedia.org/wiki/Cymbidium
- Smithsonian Gardens. (n.d.). Care of Cymbidium. Retrieved from https://gardens.si.edu/collections/plants/orchids/orchid-care-sheets/cymbidium/