Bulbophyllum gibbosum – 12cm

Bulbophyllum gibbosum is a small, epiphytic orchid species from tropical Southeast Asia, particularly Vietnam, Thailand, Malaysia, Indonesia, and parts of southern China. It grows via creeping rhizomes that produce small cylindrical pseudobulbs, each topped with a single oval to lance-shaped leaf. The leaves are leathery and mid-green, emerging upright or arching slightly from the pseudobulbs. Flowering occurs in summer and early autumn, producing a loosely arranged raceme of translucent cream or yellowish flowers on arching stems. The flowers have a distinctive lip that is mobile and slightly gibbous (swollen), which aids in attracting fly pollinators.

This orchid exhibits a spreading, mat-forming growth habit and is well suited to mounting or shallow containers with airy substrates. The flowers are faintly fragrant and tend to appear sequentially, offering prolonged visual interest over several weeks.

Native to:
Southeast Asia, including Vietnam, Thailand, Peninsular Malaysia, Sumatra, Java, Borneo, and the Lesser Sunda Islands. Typically found at low to mid elevations (3001,200 m) in warm, humid tropical forests, growing epiphytically on tree trunks and branches in shaded, moist conditions.

Water:
Requires evenly moist conditions throughout the year. Allow the substrate to approach slight dryness between waterings, but never let it dry out completely. Use rainwater, distilled, or reverse-osmosis water to avoid salt accumulation. Mounted plants may require daily misting, while potted ones should be watered every few days, depending on substrate and humidity levels.

Light:
Prefers bright, indirect light. Avoid direct midday sunlight, which can scorch the leaves.

Humidity:
Thrives in high humidity environments, ideally between 70% and 90%. Due to its compact size and humidity needs, it is highly recommended for terrarium growing in the UK. Provide consistent moisture through misting or a humidifier, and ensure good airflow to reduce the risk of fungal issues.

Temperature:
Prefers warm to intermediate temperatures. Ideal daytime temperatures range from 2027 C, with nighttime temperatures not dropping below 15 C. It does not tolerate cold drafts or temperatures below 12 C for extended periods.