(Thongchai Gold x Udom Yellow)

• Type: Epiphytic orchid

• Growth Habit: Sympodial, with tall, upright pseudobulbs

• Leaves: Long, narrow, and leathery

• Flowers: Bright yellow to golden blooms, often with a contrasting lip, appearing along the upper portion of canes

• Blooming Season: Typically once or twice a year, depending on growing conditions

🌞 Light Requirements

• Bright, indirect light is ideal.

• A few hours of gentle morning sunlight is beneficial, but avoid harsh midday sun to prevent leaf burn.

• Indoor growers can use east- or south-facing windows with sheer curtains.

🌡️ Temperature & Humidity

• Day: 25–30°C (77–86°F)

• Night: 15–20°C (59–68°F)

• Tolerates short periods of higher or lower temperatures.

• Humidity: 50–70% is ideal.

  • Use humidity trays or a humidifier if grown indoors.

💧 Watering

• Water thoroughly when the potting medium is almost dry.

• Avoid waterlogging to prevent root rot.

• Reduce watering slightly during cooler or less active growth periods.

• Always allow for good drainage.

🌱 Potting Medium

• Use a well-draining mix such as medium-grade orchid bark, charcoal, and perlite.

• Repot every 1–2 years, preferably after blooming or when the medium starts to break down.

🌸 Fertilizing

• Use a balanced orchid fertilizer (20-20-20 or similar) every 2 weeks during active growth.

• During the blooming season or cooler months, reduce feeding to once a month or use a bloom-boost formula (higher phosphorus).

✂️ Pruning & Maintenance

• Remove spent flower spikes once fully dried.

• Trim dead or yellowing leaves with sterile scissors.

• Keep air movement around the plant to prevent fungal or bacterial issues.

🌼 Blooming Tips

• Provide a slight drop in nighttime temperatures in the fall to trigger blooming.

• Maintain consistent light and avoid moving the plant frequently once a flower spike appears.