Oncidium sotoanum
TAXONOMY
FamilyOrchidaceae
GenusOncidium
Zone11
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Plants of the World OnlineABOUT
Oncidium sotoanum (often encountered in cultivation under the name Oncidium ornithorhynchum) is a pseudobulbous, epiphytic orchid from wet tropical to montane cloud forests of Mesoamerica. It forms clumps of compressed pseudobulbs with narrow leaves and produces clouds of small, pink, sweetly fragrant flowers. It prefers bright filtered light, steady moisture, and high humidity with good air movement. There is no true dormancy, though plants may experience a slightly drier rest after new growths mature.
ALSO KNOWN AS
Butterfly Orchid
Dancing Lady Orchid
Golden Shower Orchid
OVERVIEW
VPDCalculate
WaterWet
SoilPeaty
LightIndirect Bright (12 Hours)
Temperature21° C
Humidity70%
pH5.8
Pressure900 mbar
DETAILS
Care Instructions
Provide bright, filtered light rather than harsh midday sun. Keep conditions warm to moderate with good air movement and consistently high humidity. Water regularly to keep the medium evenly moist but never waterlogged, allowing only a slight dry-down between waterings when growth slows. Avoid temperature extremes and ensure steady conditions to encourage flowering.Soil
Use a fast-draining epiphytic orchid mix, such as fine-to-medium bark with sphagnum moss, perlite, and charcoal. The medium should retain some moisture yet drain freely and allow ample aeration around the roots. Mounting on cork or tree fern is suitable in very humid environments.Fertilizer
Feed lightly but regularly with a balanced orchid fertilizer at dilute strength during active growth. Apply more frequently in brighter, faster-growing conditions and reduce during slower growth. Flush the medium periodically with plain water to prevent salt buildup.Repotting
Repot when the medium begins to break down or when new root tips are just emerging from fresh growths. Use a snug pot or mount to avoid staying soggy. Typically refresh the medium every year or two, gently trimming dead roots and positioning new growths toward open space.Propagation
Divide mature clumps when repotting, ensuring each division has at least 3–4 healthy pseudobulbs and active roots. Make clean cuts, allow any wounds to callus briefly, and then pot or mount in fresh medium. Best done after flowering as new growth starts.Pruning
Routine pruning is minimal—remove spent flower spikes and dead or damaged leaves. Always use sterile tools and avoid cutting healthy pseudobulbs. Pruning is primarily for tidiness and disease prevention.Toxicity
Orchids in general, including Oncidium, are considered non-toxic to pets and humans. Ingestion is not recommended but is unlikely to cause more than mild gastrointestinal upset. Handle normally and keep out of reach of pets that may chew plants.Additional
Strong air circulation helps prevent fungal issues. A gentle day–night temperature drop can encourage blooming. Avoid letting water sit in new growths or leaf axils for long periods. Stake inflorescences early to support the many small flowers and maximize display.REVOLUTIONIZE YOUR PLANT CARE
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