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Description
Oncidium Alexandrae, also known as the Alexandra Oncidium, is a species of epiphytic orchid that is native to Ecuador and Peru. It is a popular ornamental plant due to its beautiful yellow flowers that bloom in the spring and summer months. The flowers are fragrant and last for several weeks, making it a great addition to any garden or indoor collection.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Tracheophyta |
| Class | Liliopsida |
| Order | Asparagales |
| Family | Orchidaceae |
| Genus | Oncidium |
Appearance
Oncidium Alexandrae has long, thin leaves that are a medium green color. The flowers are yellow with reddish-brown spots and can grow up to 2 inches wide. The lip of the flower is white with purple spots and has a fringed edge. The plant can grow up to 12 inches tall and 18 inches wide, making it a medium-sized orchid.
Care Guide
Oncidium Alexandrae requires regular care to ensure healthy growth and blooming. Here are some tips for caring for this orchid:
Water: Water the plant once a week during the growing season and reduce watering during the dormant season. Make sure the pot has good drainage and do not let the plant sit in standing water.
Fertilization: Use a balanced fertilizer every two weeks during the growing season to promote healthy growth and blooming.
Soil: Use a well-draining orchid mix that is specifically designed for epiphytic orchids.
Sunlight: Place the plant in bright, indirect sunlight. Avoid direct sunlight as it can burn the leaves and flowers.
Hardiness Zones: Oncidium Alexandrae thrives in hardiness zones 9-11.
Common Pests & Diseases
Oncidium Alexandrae is susceptible to pests and diseases that can damage the plant. Here are some common issues to watch out for:
Spider mites: These tiny pests can cause yellowing of the leaves and webbing on the plant. Use a miticide to control the infestation.
Mealybugs: White, cottony masses on the leaves and stem indicate a mealybug infestation. Use a systemic insecticide to control the pests.
Fungal infections: Overwatering can lead to fungal infections that can cause root rot and leaf spots. Use a fungicide to control the infection.
Habitat
Oncidium Alexandrae is native to the Andes Mountains in Ecuador and Peru. It grows as an epiphyte on trees and rocks in cloud forests at elevations between 1,500 and 2,500 meters.
Question and Answer
Q: How often should I fertilize Oncidium Alexandrae?
A: Fertilize the plant every two weeks during the growing season.
Q: What kind of soil should I use for Oncidium Alexandrae?
A: Use a well-draining orchid mix that is specifically designed for epiphytic orchids.
Q: What is the ideal temperature range for Oncidium Alexandrae?
A: The plant thrives in temperatures between 60-80°F (15.5-26.5°C).
Q: Can Oncidium Alexandrae be grown indoors?
A: Yes, the plant can be grown indoors as long as it is placed in bright, indirect sunlight.
Related Plants
Here are some related plants to Oncidium Alexandrae:
- Oncidium Sharry Baby
- Oncidium Twinkle
- Oncidium Gower Ramsey
- Oncidium Aloha Iwanaga
References
- Royal Horticultural Society. (n.d.). Oncidium Alexandrae. Retrieved from https://www.rhs.org.uk/Plants/239305/Oncidium-Alexandrae/Details
- American Orchid Society. (n.d.). Oncidium Alexandrae. Retrieved from https://www.aos.org/orchids/culture-sheets/oncidium.aspx
- Orchids Made Easy. (n.d.). Oncidium Care: The Ultimate Guide to Oncidium Orchids. Retrieved from https://www.orchidsmadeeasy.com/oncidium-care/
